I have irregular periods but i also have became sexually active. i've gotten my period but after my period i've been experiencing yellow discharge.

Doctor can check: One's primary care doctor can check out a new or unusual vaginal discharge that started after sex. The doctor can check for a urine infection, if there are any urinary symptoms. Sometimes vaginal discharges are related to overgrowth of non-dangerous bacteria, but other times they are related to sexually-transmitted infectious microbes that need treatment. A pregnancy test can be done, if needed.