Since the first week of pregnancy is calculated based on the last day of your previous menstrual cycle, when you are 4 weeks pregnant, you’re really only two weeks past conception. This week is extremely important because your future baby implants into the lining of your uterus during this time. While the majority of women do not feel the implantation process, some experience mild cramping.
4 Weeks Pregnant: Body Changes
Dizziness– If you watch a lot of movies or TV shows, you may have noticed that every character finds out their pregnant right after they faint in the middle of some major moment. While it may be overused as a plot device, it is actually based on fact. You are more likely to become very dizzy or faint during early pregnancy, possibly because the swelling uterus compresses the veins in your legs, which can cause your blood pressure to plummet.