hi, i have irregular periods, not using contraceptive as trying to conceive, have been for 9 months & no luck. Both 24 so pretty young to be having issues, but my period this month (having now) has been brown/almost black tar like blood. It's not alot, but enough to wear a pad & slightly there when I wipe. normal period pain, this is day 5 now & i'm a little worried. any ideas to put my mind at ease before i see a doctor on Thursday?

Thanks,
Carley