i had sex from about december 20 to january 10 on almost an every other day basis. we didnt use a condom but he pulled out every time. i had a period before we started in december and then after on the 14. we were so active because we wouldnt see eachother for awhile, he had just come back home and then i had to leave.... but now my question is, is it possible to get a period and still be pregnant? im on my 3rd period so far since then, and ive noticed the cramps i used to have are barely there, but the flow is still really bad. and my periods are now about 4 to 5 days instead of exactly 7 like they used to be. and right under my belly button, my belly is starting to get bigger. i dont know if its just from not being able to exercise anymore or not. someone, anyone, please help me...