4 Weeks Pregnant - Week-by-week guide (2024)

FAQs

How do I know if my pregnancy is OK at 4 weeks? ›

Your first call at week 4 of pregnancy should be to your doctor to schedule your first prenatal visit, where they'll confirm your pregnancy with a urine or blood test. For updates on what's happening with you and baby throughout your pregnancy, sign up for The Bump pregnancy week-by-week newsletter emails.

Week 4. To the outside world, you'll look much the same as usual – but on the inside, your embryo is about the size of a poppy seed and some amazing things are happening.

Week 4 of pregnancy

For example, a fertilised egg may have implanted in your womb just 2 weeks ago, but if the first day of your last period was 4 weeks ago, this means you're officially four weeks pregnant! Pregnancy normally lasts from 37 weeks to 42 weeks from the first day of your last period.

Pregnancy tests work by detecting the presence of a hormone called human chorionic gonadotropin (hCG) in your urine. Some home pregnancy tests claim to detect pregnancy as early as five days before you miss your period, but it's best to wait until the first day of your missed period for accurate results.

Potential signs of a problem include bleeding from your vagin*, severe abdominal pain, blurred vision, swelling and a bad headache that doesn't go away. You can lower your risk of complications by going to all your antenatal appointments and maintaining a healthy lifestyle.

To conclusively diagnose a loss, a doctor must perform an ultrasound to check for a heartbeat. The heartbeat does not develop until 6.5–7 weeks of gestation, so the absence of a heartbeat before this time does not indicate a loss. To confirm a pregnancy loss, a doctor may choose to perform scans on multiple days.

Before about week 8 of pregnancy, a doctor may refer to the fetus as an embryo. Cardiac tissue starts to pulse at around 5–6 weeks of pregnancy, registering as a heartbeat on the ultrasound, though the heart has not developed yet.

Other women might show early because of their age. Older women and women who have been pregnant before can show as early as the first trimester. Also, women who don't have strong core muscles may show earlier because their muscles are relaxed. Their stomach adapts more easily to looking pregnant.

You may feel sick or be sick. Although commonly known as "morning sickness", vomiting and morning sickness can happen at any time of the day or night. Symptoms usually start when you're around 4 to 6 weeks pregnant. If you're being sick all the time and cannot keep anything down, see a GP.

Conception usually occurs 11 to 21 days following the first day of the previous period in a woman who has regular menstruation.

What day did I conceive if I'm 4 weeks pregnant? ›

Using your last menstrual period date

Therefore, if you know the first day of period, you can add 11 to 21 days to this day to have an idea of when conception occurred. For example, if you are pregnant and your last period started on March 5, that means you likely conceived between March 16 and 26.

With a typical 28-day cycle, your ovary releases an egg on day 14. It lives 24 hours or less. If it gets fertilized, it takes another 5-6 days to travel through your fallopian tube and implant itself in your uterus. You're officially pregnant on about day 21.

You at 4 weeks

In the first 4 weeks of pregnancy, you probably will not notice any symptoms. The first thing you may notice is that your period does not arrive, or you may have other signs and symptoms of pregnancy, such as breast tenderness. You can confirm the pregnancy with a pregnancy test.

What should hCG levels be at 4 weeks? At 4 weeks pregnant, your hCG levels can range from about 10 to 708 mIU/mL.

Pregnancy tests can sometimes give a false negative result to women several weeks into their pregnancies, according to research by Ann Gronowski, PhD, a professor of pathology and immunology at Washington University School of Medicine in St.

You at 4 weeks

In the first 4 weeks of pregnancy, you probably will not notice any symptoms.

At week 4, miscarriage is called a chemical pregnancy since the embryo cannot be detected on ultrasound, only through blood and urine testing. Signs of miscarriage include cramping, spotting, and heavy bleeding. If you experience these symptoms, don't necessarily fear the worst.

Tests to screen for birth defects include blood tests and ultrasound. Ultrasound uses sound waves and a computer screen to show a picture of your baby inside the womb. Tests used to diagnose birth defects may include amniocentesis (also called amnio).