A woman may be well into the second week of her first trimester before any tests are able to detect her pregnancy. Many women say they don't need those two weeks to know something is changing within them. The changing hormones of a woman who is preparing to nurture the development of a fetus into a child are sometimes all it takes for a woman to know. However, pregnancy is different for every woman and detecting it early on by singling out possible symptoms is anything but an exact science. This can make the wait to test unbearable, leading to hours of scouring the Internet for symptoms of pregnancy - which can lead to the unnerving experience of suddenly acquiring all of the symptoms one reads on the Internet. So keep in mind that even without any of the symptoms of pregnancy listed below, a woman may still be pregnant.
A missed period is one of the most obvious symptoms of pregnancy. However, some women still experience light spotting despite being pregnant. A missed period can also be an effect of factors like stress, diet and lifestyle.
MedicineNet.com, a website that posts information about medical issues, has a comprehensive list of possible signs of early pregnancy that include: vomiting and nausea, fatigue, an increased need to urinate, stress, mood swings, cramping and bloating, headaches, food cravings and aversion, a higher body temperature while at rest, a swelling and tenderness in the breasts, and a darkening of the nipples and skin.