If you really think you might be pregnant, go to the doctor for blood work - this is a quantitative test which will detect pregnancy. The results are very accurate.
Unless you have a double or bicorunate uterus which are both very rare conditions (which also effect ability to concieve) then you will NOT have a period while pregnant. As I mentioned earlier it is possible to bleed while pregnant and mistaken this for a period but it is not a "period" per-se.
I had my period for the first trimester with my son. I thought I was but since I had my period I wasn't sure, but I took the test at 12 weeks and found out. Now with my daughter I didn't have a period for 2 months, but I was only 4 weeks. With her I took a test at 2 and 3 weeks and it didn't show. When I took the last one the line didn't show up right away it showed up about 5 minutes afterwards and it was really light. I am thinking when I am pregnant my HCG levels are low and do not go up as fast as they are suppose to. That may be the case with you. Alot of people say well you can not have your period and you are not suppose to, but I did. Also your HCG levels could be low like mine were with my daughter and it will not show up till you are like 4-6 weeks. It just depends, but if you did not get your period I a m pretty sure you are just the levels are low like mine were.
Some women bleed while pregnant but its not possible to have a period while pregnant.
If you still think you are pregnant in about a week, take a test.
I think yes!!!! ok I have a question for you for me :). Ok I have missed my period last month but my too came back negative, at what week did it confirm, you were pregnant and how far long were you with both?Thanks