The Risks of Substance Use During Pregnancy

Luke Patterson • January 13, 2025

The Risks of Substance Use During Pregnancy

Substance use during pregnancy is a particularly high-risk concern. To ensure optimal health for you and your baby during pregnancy, you need to understand the reality of using opioids, marijuana, tobacco, and alcohol while pregnant. 


Opioid Use During Pregnancy 

The National Opioid Settlement has brought widespread public attention to the fact that addiction and abuse of opioids can come from prescriptions as well as illicit sources. If you are taking any narcotic medications, make sure you tell your doctor that you are pregnant and taking these medications, because there are many long term studies outlining the severity of opioid use during pregnancy. The most common negative consequences are preterm birth, still birth, maternal mortality, and neonatal abstinence syndrome, which has increased by 7x from 2000 to 2014. 

  • Preterm birth means that your baby might be born early and underweight. Preterm births are much more likely to be hospitalized because the baby’s lungs are not fully developed. 
  • Still birth refers to when a baby dies inside the womb and is born with no signs of life 
  • Maternal Mortality Rate (MMR) refers to the death of a pregnant woman. The MMR from opioid use disorder increased from 11.2 to 48.5 per 100,000 live births between 1999 and 2017, a 76.9% relative increase due to the increased availability of prescription opioid use. 
  • Neonatal Abstinence Syndrome occurs in newborns who were addicted to opioids during gestation and resembles withdrawal symptoms after they are born. 


Marijuana

No amount of marijuana use in pregnancy has been proven to be safe during pregnancy.  The American Academy of Pediatrics lists a number of harmful side effects of marijuana during pregnancy, including a higher likelihood of the mother developing anemia, the higher likelihood of an infant being born with low birth rate, and a weakening of the placental barrier. Every time a mother ingests marijuana, her baby is also ingesting it. This substance use during pregnancy is very serious, especially because long-term studies have demonstrated that children who are exposed to marijuana in the womb were noticeably less able to control their impulses or problem solve effectively. At ages three to four, the child may exhibit poor verbal, memory, and motor skills, as well as inattentiveness, hyperactivity, and impulsiveness. 


Tobacco

Tobacco use in pregnancy is harmful. It increases the likelihood of many health concerns, such as preterm birth, low birth weight, and birth defects of the mouth and lip. Smoking both during and after pregnancy also significantly increases the chances of sudden infant death syndrome (SIDS). Any substance containing nicotine, including traditional cigarettes, e-cigarettes, and others is harmful for the pregnancy. This includes vaping. Nicotine can damage a developing baby’s brain and lungs.


Alcohol

Any type of alcohol is harmful to ingest during pregnancy. Alcohol use can cause miscarriage, stillbirth, and a range of lifelong physical, behavioral, and intellectual disabilities. Usage leads to fetal alcohol spectrum disorders (FASDs).  The list of potential damaging side effects that alcohol can have on a developing baby during pregnancy is long. 


Substance use during pregnancy

It is important to understand the risks associated with substance use during pregnancy. At Life Resources of Northern Michigan, we understand the significance of prioritizing your health during your pregnancy. Our dedicated team is committed to supporting you throughout your pregnancy journey. 


If you have concerns about your pregnancy due to substance use, take the proactive step and
book an appointment with us today. We can talk to you about your options. 


July 21, 2025
If you’re wondering when you might be able to get pregnant again after an abortion, you’re not alone—and your question is completely valid. An abortion ends an existing pregnancy, but it doesn’t change how your reproductive system works going forward. That means if you have unprotected sex after an abortion, you can become pregnant again—sometimes sooner than you might expect. Even while you’re still recovering or experiencing symptoms like bleeding or nausea from elevated hCG levels, ovulation can occur. In fact, some medical literature suggests it’s possible to conceive as soon as five days after the procedure. If you’re not ready to become pregnant right away, it may help to talk with your healthcare provider about birth control options that fit your body and your goals. You’re also always welcome at our center, where we provide a safe space to ask questions, explore your options, and get reliable information—all at no cost to you. Understanding the Difference: Birth Control vs. Abortion It’s easy to feel confused about how birth control and abortion differ, especially when you’re sorting through a lot of information. You need to understand the process of conception first. Here is a simplified explanation: Pregnancy begins when a sperm cell fertilizes an egg, forming a zygote. This single cell carries the full set of DNA from both biological parents. The zygote travels through the fallopian tube to the uterus, where it becomes a blastocyst and implants into the uterine lining. At that point, an amniotic sac begins forming around the embryo. Birth control works by preventing this process from starting—either by stopping ovulation, blocking sperm, or preventing fertilization. Abortion, by contrast, ends a pregnancy that has already begun. It doesn’t stop your body from ovulating in the future, nor does it prevent sperm from reaching the egg or implantation from occurring. That’s why your fertility can return quickly after an abortion, and pregnancy may be possible within just days. Unprotected Sex and Pregnancy Risk Understanding how pregnancy happens can help you make informed decisions. Unprotected sex can lead to pregnancy even when timing doesn’t seem ideal—during your period, after an abortion, or while on birth control. The chance of pregnancy varies based on individual factors like hormone levels, cycle timing, and overall health. However, it is still possible to become pregnant: While using contraception (especially if not used perfectly) During your period or in between cycles From ejaculation near the vaginal opening (even without penetration) Even if you’ve received gender-affirming care, such as testosterone—if you still have a uterus and ovaries, pregnancy can occur So, How Soon Can You Get Pregnant After an Abortion? The short answer: very soon—sometimes in less than a week. Because ovulation can return quickly, it’s important to know that unprotected sex at any time can lead to pregnancy, even shortly after an abortion. If you’re unsure about your fertility, birth control options, or next steps, we're here to help. At our center, you’ll find a judgment-free place to ask questions and get support—whatever you’re facing. All our services are offered at no cost, and you’re welcome here.
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It’s a surprising idea—but yes, being pregnant with twins can sometimes cause a false negative result on a urine pregnancy test. This rare situation is linked to something called the hook effect, which can happen when hormone levels are extremely high. Pregnancy tests are typically very accurate. However, when hCG levels exceed 500,000 mIU/mL, it can overwhelm the test, preventing it from detecting the hormone properly. This is more likely to happen in multiple pregnancies, especially if each baby has their own placenta, which can compound hormone levels. If you’ve missed multiple periods, have pregnancy symptoms, or underwent fertility treatments like IVF—but your urine test is still negative—it’s a good idea to follow up with a blood test for confirmation. How Do Pregnancy Tests Work? Pregnancy tests detect the presence of hCG (human chorionic gonadotropin), a hormone that rises rapidly during early pregnancy. A nonpregnant woman typically has about 5 mIU/mL of hCG, while pregnancy tests generally detect levels of 20 mIU/mL or higher. Here’s how it works: the test contains antibodies that bind to hCG. If the hormone is present at a detectable level, the test will show a positive result. However, in rare cases—like very high hCG concentrations—the test becomes overwhelmed and fails to register correctly. This is the hook effect. hCG Levels by Week of Pregnancy Here’s a general guideline of hCG levels during pregnancy: Week 3: 5–50 mIU/mL Week 4: 5–426 mIU/mL Week 5: 18–7,340 mIU/mL Week 6: 1,080–56,500 mIU/mL Weeks 7–8: 7,650–229,000 mIU/mL Weeks 9–12: 25,700–288,000 mIU/mL Hook effect range: >500,000 mIU/mL When Can Pregnancy Tests Be Inaccurate? Urine tests are 99% accurate under normal circumstances. But if your hCG levels are unusually high—often 2,500 times higher than the lowest detectable amount—the hook effect can lead to a false negative result. This is most likely to occur late in the first trimester and especially in pregnancies involving multiples. How Does IVF Affect Pregnancy Testing? IVF (in vitro fertilization) increases the chances of a multiple pregnancy. That’s because more than one embryo is often implanted to improve success rates. A 2006 Canadian study shows that about 30% of IVF pregnancies result in multiples, compared to less than 1% of natural pregnancies. This can lead to elevated hCG levels, making inaccurate test results more likely. If you’ve undergone IVF and suspect you're pregnant but your test is negative, it's wise to request a blood test to confirm. So, Can Twins Cause a False Negative Pregnancy Test? Yes, although it’s rare, being pregnant with twins can cause a urine pregnancy test to show a false negative especially if the pregnancy results from IVF. If you’re experiencing symptoms of pregnancy but your test results are unclear, we recommend scheduling a follow-up appointment. We’re here to help provide accurate medical information and compassionate support, no matter where you are in your pregnancy journey. Contact us today to speak with a professional or schedule a free appointment.
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