** Thanks for contacting HCM with your health concern 1. since you have been sexually active and also used barrier method, still exclude possibilities of brown discharge [which occur after period] like: . Do a UPT [urine pregnancy test] to exclude pregnancy/miscarriage [implantation bleeding] . It could be old blood from previous cycle . If discharge is odorless, it is normal, but if foul smelling then check with a Gynecologist who will perform a vaginal swab and polymerase chain reaction [PCR] tests taken to check for the presence of chlamydia, mycoplasma, herpes and cytomegalovirus [CMV] infection. . treatment will be based upon the pathological factor thus professional medical consultation and testing is necessary.