Some of the signs of pregnancy are universal affecting almost every woman, while others can occur once and never show up again. Some signs of pregnancy can look very similar to the symptoms most women have suffered from pre-menstrual and menstrual cycles. Bloating, backaches, fatigue, headaches, swore or tender breasts, cramping and even mood swings are common signs of pregnancy as well as common signs of menstrual symptoms. Some of these symptoms can be due to increased hormone production.

Of course one of the most obvious signs of pregnancy is missing one’s period entirely. Most typically, this is the most accurate indicator and can be confirmed with a home pregnancy test taken at least a week after the missed period.

Other signs of pregnancy can be the darkening or enlarging of the areola or the nipple of the breast. Women can also suffer from nausea, an increased sensitivity to smells and increased urination.

Some women have also felt fetal heart tones and the palpitation of fetal movements which are sure signs of pregnancy. Some women experience changes in their skin, libido, and even an enlargement in their breast size.

It's also possible for some women to not experience any other signs of pregnancy besides a missed period. Some speculate this might be due to an already healthy lifestyle or a regimented closely monitored and healthy pregnancy management.