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Pregnancy Symptoms

The only way to know for sure you're pregnant is with a pregnancy test. But there are early symptoms of pregnancy that can alert you to the fact that you may be pregnant and should have a test.

Some women are so attuned to their body and the changes it undergoes with pregnancy that they seem to know from the start they are pregnant. Other women, though, have no suspicion they are pregnant until they miss their first period, which is perhaps the most widely recognized early sign of pregnancy.

Do All Women Get Early Symptoms of Pregnancy?

The early symptoms of pregnancy vary from woman to woman and even from pregnancy to pregnancy. So not every woman has the same symptoms or even the same symptoms from one pregnancy to the next. Also, because the early symptoms of pregnancy often resemble what happens right before and during menstruation, you may have some of the symptoms and not recognize them.

Slideshow: Fetal Development Month by Month

What follows is a description of some of the most common early symptoms of pregnancy. It's important to keep in mind that the symptoms may be caused by other things besides being pregnant. So the fact that you notice some of these symptoms does not necessarily mean you are pregnant. The only way to tell for sure is with a test.

Early Symptom of Pregnancy: Spotting and Cramping

A few days after conception, the fertilized egg attaches itself to the uterine wall. This can cause one of the earliest signs of pregnancy -- spotting and, sometimes, cramping. Known as implantation bleeding, this early symptom occurs anywhere from six to 12 days after the egg is fertilized.

The cramps resemble menstrual cramps, and some women mistake them and the bleeding for the start of their period. The bleeding and cramps, however, are slight. Other things that can cause this symptom include the actual start of menstruation, altered menstruation, using a different birth control pill, infection, or abrasion from intercourse.

In addition to bleeding, you may notice a white, milky discharge from your vagina. This is related to the fact that, almost immediately after conception, the vaginal walls begin to thicken. It is the increased growth of cells lining the vagina that causes the discharge. This discharge can continue throughout your pregnancy, but typically it's harmless and doesn't require treatment. However, if you notice a foul odor to the discharge or a burning and itching sensation, you should contact your doctor. These could be signs of a yeast or bacterial infection.

Early Symptom of Pregnancy: Breast Changes

Changes in your breasts are another very early sign of pregnancy. When you conceive, your body undergoes a rapid change in hormone levels. Because of the changes in hormones, you may notice in one to two weeks that your breasts have become swollen, sore, or tingly. Or they may feel heavier or fuller or feel tender to the touch. In addition, the area around the nipples, called the areola, may darken.

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