Normal Pregnancy

Pregnancy begins when a fertilized egg implants in the lining of the uterus. This typically happens about 6 to 12 days after conception. The developing embryo starts producing a hormone called human chorionic gonadotropin, or hCG, shortly after implantation. This hormone supports the pregnancy by signaling the ovaries to keep producing progesterone.

A normal pregnancy lasts about 40 weeks from the first day of your last menstrual period. Healthcare providers divide this time into three trimesters, each lasting roughly 13 weeks. During the first trimester, your body undergoes rapid changes as it adapts to support a growing baby. Most organs and systems begin forming during these critical early weeks.

Early pregnancy detection helps you make informed decisions about prenatal care, nutrition, and lifestyle changes. Knowing you are pregnant as soon as possible allows you to start taking folic acid, avoid harmful substances, and schedule your first prenatal appointment. Blood tests can detect pregnancy earlier than urine tests by measuring the exact amount of hCG in your bloodstream.

• Missed menstrual period
• Tender or swollen breasts
• Nausea with or without vomiting, often called morning sickness
• Increased urination
• Fatigue and tiredness
• Food cravings or aversions
• Light spotting or cramping, known as implantation bleeding
• Mood changes and emotional sensitivity
• Bloating and mild abdominal cramping
• Heightened sense of smell

Some people experience few or no symptoms in the earliest weeks of pregnancy. Others notice multiple signs within days of implantation. Symptoms vary widely from person to person and from pregnancy to pregnancy.

Pregnancy occurs when sperm fertilizes an egg during ovulation. The fertilized egg then travels down the fallopian tube and implants in the uterine lining. Factors that support healthy conception include regular ovulation, healthy sperm, open fallopian tubes, and a receptive uterine environment. Timing intercourse during the fertile window, which is typically the 5 days before ovulation and the day of ovulation, increases the chances of conception.

Age, overall health, nutrition, and stress levels can all affect fertility and pregnancy. Women under 35 generally have the highest fertility rates. Maintaining a healthy weight, avoiding smoking and excessive alcohol, and managing chronic conditions support reproductive health. Certain medications and environmental exposures can affect fertility, so discussing these with a healthcare provider before trying to conceive is important.

Pregnancy is diagnosed through hCG testing in either urine or blood. Blood tests are more sensitive and can detect pregnancy earlier than home urine tests, often within 6 to 8 days after ovulation. Quantitative blood tests measure the exact amount of hCG in your system. In a normal pregnancy, hCG levels approximately double every 48 to 72 hours during the first few weeks.

Rite Aid offers add-on hCG testing that can confirm pregnancy and help monitor early pregnancy progression. After a positive pregnancy test, an ultrasound performed around 6 to 8 weeks can visualize the embryo and confirm a viable pregnancy. Your healthcare provider will also perform a physical exam and review your medical history during your first prenatal visit.

• Start prenatal vitamins containing at least 400 micrograms of folic acid daily
• Schedule your first prenatal appointment with an obstetrician or midwife
• Eat a balanced diet with plenty of fruits, vegetables, whole grains, and lean protein
• Stay hydrated by drinking at least 8 to 10 glasses of water daily
• Avoid alcohol, tobacco, and recreational drugs completely
• Limit caffeine intake to less than 200 milligrams per day
• Avoid raw or undercooked meats, unpasteurized dairy, and high mercury fish
• Get regular gentle exercise as approved by your healthcare provider
• Rest when tired and prioritize sleep
• Manage stress through relaxation techniques and support from loved ones