The first weeks of pregnancy come with a long list of adjustments, and knowing what actually matters can save you a lot of anxiety. The most important early steps are starting a prenatal vitamin with at least 400 mcg of folic acid, scheduling your first prenatal appointment, and cutting out alcohol and a handful of specific food risks. Beyond that, early pregnancy is about building habits that support the next several months.
Start Folic Acid Right Away
Folic acid is the single most time-sensitive supplement in early pregnancy. It protects against neural tube defects, which are serious problems with the brain and spinal cord that develop in the first few weeks, often before you even know you’re pregnant. The CDC recommends 400 mcg daily for all women who could become pregnant. If you’ve had a previous pregnancy affected by a neural tube defect, the recommendation jumps to 4,000 mcg daily.
Most prenatal vitamins contain at least 400 mcg, so picking up a standard prenatal vitamin covers this base. Look for one that also includes iron and DHA. If you haven’t been taking one, start the day you get a positive test. It’s not too late to benefit.
Confirming Your Pregnancy
Home pregnancy tests detect a hormone called hCG in your urine. A level below 5 mIU/mL is considered negative, and anything above 25 mIU/mL is a clear positive. Results that fall between 6 and 24 are in a gray area, which is why a faint line sometimes appears. If your result is ambiguous, wait two or three days and test again. hCG roughly doubles every 48 hours in a healthy early pregnancy, so a retest usually gives a definitive answer.
Book Your First Prenatal Visit
Call your doctor or midwife as soon as you have a positive test. Most first appointments happen between weeks 8 and 10, though some providers schedule earlier depending on your history. This visit is thorough. Expect blood work that checks your blood type and Rh status, iron levels, immunity to rubella and chickenpox, and screening for infections like hepatitis B, syphilis, chlamydia, gonorrhea, and HIV. You’ll also give a urine sample to check for urinary tract infections.
Your provider will likely do a physical exam, including a pelvic exam and possibly a Pap test if you’re due for one. They may also check your heart, lungs, and thyroid. This appointment is a good time to bring a list of any medications or supplements you’re currently taking, since some need to be adjusted.
Prenatal Screening and Early Ultrasounds
Genetic screening is typically offered in the first trimester. One common option is first-trimester combined screening, which pairs a blood test with an ultrasound that measures the fluid at the back of the baby’s neck (called nuchal translucency). This is most accurate when done between 11 and 13 weeks. Cell-free DNA screening, sometimes called NIPT, is a blood test that checks for chromosomal conditions like Down syndrome and is now recommended as a routine option for all pregnant patients by ACOG. Your provider will walk you through which screenings make sense for your situation. All of these are optional.
Foods to Avoid
Food safety in pregnancy centers on avoiding two main threats: a bacteria called listeria and high mercury levels in certain fish. Listeria is especially dangerous because it can cross the placenta, and pregnant women are significantly more susceptible to infection.
The specific foods to skip or modify:
- Deli meats, hot dogs, and cold cuts unless heated to 165°F (steaming hot)
- Raw or undercooked meat and poultry. Cook whole cuts of beef, pork, lamb, and veal to 145°F (with a 3-minute rest), ground meat to 160°F, and all poultry to 165°F
- Raw sprouts like alfalfa and bean sprouts
- Unpasteurized milk, juice, and cider, along with soft cheeses made from unpasteurized milk
- Premade deli salads like potato salad, egg salad, and chicken salad from a deli counter
- Refrigerated pâté or meat spreads
- High-mercury fish such as swordfish, shark, king mackerel, and tilefish
Unwashed fruits and vegetables are also a risk. Give all produce a good rinse, even pre-bagged salad greens. And don’t leave cut melon sitting out for more than two hours (one hour if it’s above 90°F).
Managing Morning Sickness
Nausea typically peaks between weeks 6 and 9 and improves for most people by weeks 12 to 14. It can strike at any time of day, not just mornings. Two remedies with good evidence behind them are ginger and vitamin B6.
For ginger, the recommended dose is 250 mg of standardized ginger extract three to four times a day, up to 1,000 mg total. If you prefer fresh ginger, about one teaspoon (5 grams) of freshly grated ginger is roughly equivalent to that daily maximum. Ginger tea, ginger chews, and ginger ale (made with real ginger) can all help.
Vitamin B6 is often used alongside ginger, typically at low doses. One studied combination uses 600 mg of ginger extract with 37.5 mg of B6. If you’re already taking a prenatal vitamin that contains B6, factor that in to avoid doubling up. High doses of B6 over time can cause nerve-related symptoms like tingling or numbness, so stop and talk to your provider if that happens.
Eating small, frequent meals and keeping plain crackers by your bed for first thing in the morning also helps many people. If your nausea is severe enough that you can’t keep water down for more than 8 hours or food down for more than 24 hours, that’s a sign of a condition called hyperemesis gravidarum, which needs medical treatment.
Exercise During Early Pregnancy
Exercise is not only safe in early pregnancy, it’s actively recommended. The guideline is at least 150 minutes of moderate-intensity aerobic activity per week. That’s about 30 minutes, five days a week, of something like brisk walking, swimming, or cycling. If you were a runner or did high-intensity workouts before pregnancy, you can generally continue as long as your pregnancy is uncomplicated.
Heart rate isn’t the best way to gauge intensity during pregnancy because pregnancy itself changes your heart rate response. A simpler method is the “talk test”: if you can carry on a conversation while exercising, you’re at an appropriate intensity. On a perceived exertion scale, aim for “somewhat hard” rather than all-out effort.
A few practical precautions: stay well hydrated, avoid exercising in hot or humid environments, and eat enough before longer sessions since intense exercise lasting more than 45 minutes can cause a drop in blood sugar. After 20 weeks, avoid exercises that have you lying flat on your back for extended periods.
Medications to Be Careful With
The most common concern is over-the-counter pain relievers. Acetaminophen (Tylenol) is generally considered the safest option during pregnancy. NSAIDs like ibuprofen (Advil, Motrin) and naproxen (Aleve) carry potential risks, particularly later in pregnancy, where they’ve been associated with heart-related complications in the fetus. Many providers recommend avoiding them throughout pregnancy when possible.
Low-dose aspirin is a special case. It’s actually prescribed during pregnancy for some women at higher risk of preeclampsia, and large studies involving over 30,000 women have not found increased risks of fetal bleeding complications at low doses. But this is a decision your provider makes based on your specific risk factors, not something to start on your own.
Before taking any medication, prescription or over-the-counter, check with your provider. This includes herbal supplements, allergy medications, and sleep aids.
Reducing Chemical Exposures
You don’t need to overhaul your entire life, but a few targeted swaps can lower your exposure to chemicals that may affect fetal development. In personal care products, look for options free of phthalates, parabens, oxybenzone, and triclosan. Choose products labeled “fragrance free” rather than “unscented,” since unscented products may still contain chemical fragrance blends.
In the kitchen, avoid heating food or drinks in plastic containers. Choose BPA-free canned foods when possible. Don’t store or serve food in pewter, brass, or lead crystal containers, which can leach lead. If you buy produce that isn’t organic, washing it thoroughly reduces pesticide residue.
Warning Signs That Need Immediate Attention
Most early pregnancy symptoms, even unpleasant ones, are normal. But certain symptoms can signal serious complications like ectopic pregnancy or miscarriage and require immediate medical care:
- Severe abdominal pain that is sharp, stabbing, or cramp-like and doesn’t go away, or starts suddenly and gets worse. Pain radiating to your shoulder or back is especially concerning.
- Vaginal bleeding that’s heavier than light spotting, similar to a period.
- Fluid leaking from the vagina, or discharge with an unusual odor.
- Inability to keep fluids down for more than 8 hours, combined with signs of dehydration like dry mouth, dizziness, confusion, or headaches.
Light spotting in early pregnancy is common and often harmless, but bleeding that fills a pad is not something to wait on. If you’re unsure whether what you’re experiencing is normal, calling your provider’s nurse line is always a reasonable step.