If you’ve just gotten a positive pregnancy test, the most important first step is to schedule a prenatal appointment and start taking a prenatal vitamin with 400 to 800 micrograms of folic acid daily. Folic acid is critical in the earliest weeks of pregnancy because it helps prevent serious birth defects of the brain and spine. Beyond that, there are practical changes to your diet, habits, and environment that will keep you and your pregnancy healthy from the start.
Schedule Your First Prenatal Visit
Call your doctor or midwife as soon as you know you’re pregnant. At that first appointment, expect bloodwork, a pelvic exam, and screening for infections. Your provider will ask about your health history, medications, supplements, family history of genetic conditions, and lifestyle habits like smoking, alcohol, and exercise. You’ll also be given prenatal vitamins if you aren’t already taking them.
A heartbeat typically can’t be detected on ultrasound until at least 6 to 7 weeks, so don’t be alarmed if your provider doesn’t attempt that at a very early visit. Most people have their first appointment somewhere between 6 and 10 weeks, though your provider may schedule it earlier if you have a history of complications or a medical condition that needs monitoring.
What Your Body Will Feel Like
Hormone levels rise sharply in the first trimester, and the side effects can hit fast. Sore, swollen breasts are often one of the earliest signs. Many people need a larger bra before the first trimester is over. Nausea (often called morning sickness, though it can strike any time of day or night) is another hallmark. Fatigue can be intense because your body is doing enormous metabolic work even before you’re showing. Bloating and mood swings are common too.
Most of this eases in the second trimester. Energy levels typically bounce back, and nausea fades for most people around weeks 12 to 14. Knowing this is temporary can help you get through the roughest stretch.
Foods to Eat and Avoid
A few specific foods carry real risks during pregnancy, mostly because of two threats: listeria (a bacteria that can cause miscarriage or stillbirth) and mercury (which can harm a developing brain and nervous system).
- Skip high-mercury fish: shark, swordfish, king mackerel, and tilefish. Other fish and shellfish, cooked thoroughly, are generally safe and a good source of nutrients.
- Avoid raw or undercooked meat, poultry, and seafood: that means no sushi, sashimi, ceviche, or rare steaks for now.
- Be careful with deli meats and hot dogs: eat them only if heated until steaming. Cold, straight from the package carries listeria risk.
- Watch out for soft cheeses: brie, camembert, blue cheese, queso fresco, and similar fresh soft cheeses are risky, especially if made with unpasteurized milk.
- Skip refrigerated smoked seafood: items labeled “lox,” “nova-style,” or “kippered” unless they’re in a cooked dish.
You don’t need to overhaul your entire diet. Focus on getting enough protein, iron, calcium, and folate from a variety of whole foods, and let your prenatal vitamin fill the gaps.
Caffeine, Alcohol, and Medications
Caffeine in moderate amounts, under 200 milligrams per day, does not appear to be a major factor in miscarriage or preterm birth. That’s roughly one 12-ounce cup of brewed coffee. If you drink more than that, consider scaling back rather than quitting cold turkey.
Alcohol has no known safe amount during pregnancy. The safest approach is to stop drinking entirely once you know you’re pregnant.
Medications are more nuanced than most people expect. Many websites post lists of “safe” over-the-counter drugs during pregnancy, but for a lot of those medicines, there simply isn’t enough scientific evidence to back up that label. Even acetaminophen (Tylenol), long considered the go-to pain reliever in pregnancy, has come under closer scrutiny. Some studies have found an association between chronic use throughout pregnancy and neurological conditions in children, though a direct causal link hasn’t been proven. The practical takeaway: before you take anything, including herbal supplements and vitamins beyond your prenatal, talk to your provider. In some cases, stopping a medication you were already on can be more dangerous than continuing it, so this is a conversation, not a blanket rule.
Exercise During Pregnancy
Physical activity during pregnancy is safe and encouraged, as long as you don’t have specific medical complications that your provider has flagged. If you were already exercising before pregnancy, including vigorous workouts, you can generally continue. If you weren’t active before, now is still a good time to start with moderate activities like walking, swimming, or prenatal yoga.
You may need to make some modifications as your body changes. Balance shifts, joints loosen, and your center of gravity moves forward. Activities with a high risk of falling or abdominal impact (skiing, contact sports, horseback riding) are worth avoiding. Listen to your body: if something feels wrong or painful, stop.
Environmental Risks at Home
One of the less obvious hazards is toxoplasmosis, a parasitic infection found in cat feces, raw meat, unwashed produce, and contaminated soil. For most healthy adults it causes mild or no symptoms, but during pregnancy it can seriously harm a developing baby.
If you have a cat, have someone else handle the litter box. If that’s not possible, wear disposable gloves, wash your hands thoroughly afterward, and change the litter daily. The parasite doesn’t become infectious until 1 to 5 days after it’s shed in feces, so daily cleaning significantly reduces the risk. The same caution applies to gardening: wear gloves when working in soil, since outdoor cats may have used the area.
Don’t Skip the Dentist
Pregnancy hormones increase the risk of gum disease, which has been linked to preterm birth. If it’s been more than six months since your last dental visit, or you have any oral health concerns, schedule an appointment soon. Dental exams, cleanings, X-rays, and most other dental procedures are safe during pregnancy. This is one of the most commonly postponed appointments by pregnant people, and one of the easiest to check off the list.
Warning Signs That Need Immediate Attention
Some symptoms in pregnancy require urgent care. Call your provider or go to the emergency room if you experience severe belly pain that starts suddenly, gets worse over time, or doesn’t go away, especially if it’s accompanied by severe chest, shoulder, or back pain. Vaginal bleeding heavier than light spotting, similar to a period, is another red flag. Fluid leaking from your vagina before you’re near your due date also warrants immediate evaluation.
Light spotting in early pregnancy is common and often harmless, but heavier bleeding is always worth getting checked. Trust your instincts: if something feels seriously wrong, act on it.