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.

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.

Hi Mayra

That is a lot of very useful information for anyone who thinks that they might be pregnant. Pregnancy tests are very sophisticated these days so it is usually very east to establish whether or not you are pregnant. Sometimes they can give a false reading however and so |I would Say that your need to check with your doctor when you think you are pregnancy, probably at the point that you would got o see him anyway to get your pregnancy care started.