I have pcos. About six months ago i started taking birth control to regulate my period. I am still currently using birth control. Today i was scheduled to start my period. And i did, but later in the day than usual. When i started it was normal, light, and pinkish reddish. About thirty minutes after i had checked, i went to use the restroom, and i wiped and there was brown discharge instead of blood. Could this be early signs of pregnancy? My boobs have been tender, more tender than usual. I also took a pregnancy test about two weeks ago and it said negative.