I have been experiencing brown discharge from my vagina for about a month now. I also completely skipped my period last month, I took a pregnancy test but it was negative. The discharge is brown and almost constant, leaving stains on my underwear. Last week after having sex it was like I got my period, there was blood so I assumed my period was just very late but the next morning when I got up to change my tampon there was no bleeding. The brown discharge is like a constant spotting when I wipe sometimes it is a lot and sometimes very little to none.