Looking for a week-by-week guide to pregnancy? You're in luck! We've got loads of expert-approved info about each week and trimester, including what's up with your growing baby and what changes to expect for yourself. Pregnancy occurs when a sperm fertilizes an egg after it’s released from the ovary during ovulation. The fertilized egg then travels down into the uterus, where implantation occurs. A successful. 3.1Symptoms and signs. 3.2Biomarkers. 3.3Ultrasound. 3.4Medical imaging. If you think you might be pregnant, it is natural to feel a mix of anticipation, hope, uncertainty, or even anxiety. Early pregnancy can bring subtle changes — and sometimes symptoms that are easy to misinterpret. An at-home pregnancy test is the most common way to confirm pregnancy, but you can also confirm you’re pregnant with a blood test. Some of the first signs of pregnancy include a missed period, nausea and fatigue. Learn about the science and symptoms of a woman’s 9-month pregnancy. Explore the science behind the body’s greatest mysteries -- in two minutes flat. From hormone increases and morning sickness. Subscribe to The Doctors: The last few weeks of pregnancy can be pretty uncomfortable, but what if you had to stay pregnancy longer than 40 weeks? All you need to know about pregnancy, labour and birth including trying to get pregnant, foods to avoid, antenatal care and how to keep well in pregnancy. Consider this week-by-week pregnancy calendar your ultimate guide to the next nine months. When you’re pregnant, your baby is changing every day, and your body is keeping pace. This pregnancy tracker will help you better understand the weeks, months, and trimesters of your pregnancy. Congratulations, and welcome to your pregnancy! From what to expect each week to how to prepare for labor and beyond, here's the info you need. Here's what you need to know about your baby's development and more throughout your pregnancy.