I have had unprotected sex for over a month now. My cervix has been high and soft for 2 weeks now, I have sore swollen breast as well as slightly darker nipples and little bumps around them and kinda veiny. I was told I have PCOS so my periods are all over the place, I haven't had a period since June but the other night after sex I bled light pink and it only lasted for an hour than today (2 days later) I have brown bleeding only when I wipe, I took a test and it's negative. My body feels so different and I don't know whats going on. Any input?