It is common to feel lethargic and tired in the beginning of pregnancy as the body adjusts to a growing pregnancy. Sometimes, aches and pulling discomfort are felt in the pelvis and groin as the growing womb tugs on the ligaments at its corner (ligamentous strain). Occasionally there may be mild vaginal bleeding, sometimes after much walking or after sexual intercourse. This is most likely from the changes in the cervix during pregnancy rather than a sign of miscarriage. Some women may complain of feeling bloated and having a lot of gas. This is because pregnancy slows down the stomach and gut movement, leading to more burping and constipation. Hence it is advisable to break up your meals into smaller portions and take plenty of water, fruits and vegetables.