For the last 5 months my period has been very abnormal, almost not there with brown blood clots coming out instead of a regular period flow almost like its old blood, i had even missed it one month and I wasnt and am not pregnant, my period always use to be very normal and on time.
Im a 33 yr female and I have been on birth control for the past 6yrs. I was just curious, if it would be due to the pill or something else.

thanks!