I have not had a natural AF since coming off BCP about 6 months ago and have been charting/temping for about the last 3 months, there is no sign of ovulation on my chart but last night when i was checkin cm there was some blood. My temps over the last few days have been gradually getting higher and higher and today was the highest of my whole chart, but as i kept checking cm today it was just brownish blood which seems to have gone now........ So i dont know what this could be?? Could it be my AF even if i havent O'd or could i be preggers or maybe this is O.... but i did an OPK today and it was negative.

I have been waiting so long so i am just happy that something is happening.....but am confused as to what and why... Can anyone offer advice or know wat this might mean?
Thanks