hi i have pcos, in june this yea i had ovarian drilling to which the blood test says im ovulating, ive had regular periods since the drilling never once have i ever spotted before my period, i was due on the 29th for my period i had unusual brown discharge, the following afternoon i had light pink watery blood (not common for my period) it wasnt long lasting, but returned sunday afternoon again not lasting very long with just a bit more brown discharge, today nothing i took a pregnancy test but it came back negative am wondering what this could be?