Fetal development at four weeks is still in the earliest stages of pregnancy, therefore you may not notice all signs and symptoms right away. At four weeks, the amniotic cavity is forming and the placenta is starting to form. You may notice slight changes in mood and body, especially if you are paying close attention.
A missed period will not occur at four weeks of pregnancy; however, it should be right around the corner. A home pregnancy test can be taken around four weeks, or a week or more after your missed period for the most accurate results.
Sore or tender breasts are a sign of pregnancy at four weeks. Breasts may be swollen, and will be sore to the touch.
You may be feeling tired or getting exhausted faster than usual.
At four weeks of pregnancy, women start to feel nauseous or queasy throughout the day. This may or may not result in vomiting.
During pregnancy the amount of blood and other fluids in your body increase, according to BabyCenter.com. This, as well as an increase in the hormone hCG, can cause increased urination.
Abdominal bloating feels similar to bloating before a period. Clothes may be snugger, even at four weeks pregnant.