I haven't had a period in 2 months. I have some symptoms that point to the sign of pregnancy, but I've tookin three at home pregnancy test. My nipples are killing me there sore an it got to the point where today i didn't want to wear a bra. My breast have swallen an gotten a little heavy. I have to go to the bathroom more frequently and i've been extremely tired. Certain foods make me feel sick after eating them. But i've had some cramps mainly if i lay down on my stomache and after i eat an i feel sick after wards i cramp. Also if i stand for a long time ill start to cramp and my lower back gets extremely stiff, hard and sore. I have never missed a period in my life. My boyfriend an i have been having unprotected sex for about 3 three weeks before my first missed period. I do have PCOS or poly cystic ovarian syndrome. But it was a month before we strated having unprotected sex i had an ultra sound an everything was as normal as an average women.An now im concerned if it's my PCOS or if im pregnant? Like i said i've taken three home pregnancy test each one of them negative. The first one when i missed my first period. The second one two weeks after that, and the third one after my second missed period. He's done some research an said that girls with PCOS dont get acurate results for a month or two and i don't know if that's true or not. It's just things aren't adding up at least not to me and i was wondering if some one could clear it up??