Can you take a pregnancy test while bleeding but not sure if its your mestruation?

Be sure not to get ANY menstrual blood on the test strip.If you know for sure that you are pregnant, it is probably not going to be your period, although some women have experienced a "first" period then learns a couple of weeks later that they really are pregnant. It is possible that it could be implantation bleeding caused by the fertilized egg to attach itself to the uterine wall. Or it could be a cervical change that can cause vaginal bleeding. Vaginal bleeding can also be a symptom of ectopic (tubal) pregnancy. Another cause for bleeding during pregnancy is a miscarriage although the first two reasons for bleeding are more common, it is still a good idea to contact your doctor as soon as you can. Here is a link to a website that will calculate the probability of your pregnancy: http://www.thepregnancytest.com/ To ensure the best results: * Take the test in the morning, if possible, because your hCG (pregnancy hormone) levels are at it's highest * Don't drink a bunch of fluids before taking the test because it will dilute your urine and can affect the results * Take the test no more than 1-2 days before expected period. Although some test say that you can see results up to 5 days before your missed period, the percentage of accuracy is very low. * urinate for as long as possible on the foam-like strip * wait for the results!