Hello, I Get This Itching Sensation And Brown Discharge (not

Hello,
I get this itching sensation and brown discharge (not exactly a discharge cause when i wipe the area with a clean tissue paper it looks like these brown little colonies spread all over that area of the paper)since few months now. I am 25yrs old. Had intercourse 2 months ago. But I am facing this problem every month. I had no complaints before. I am worried now. Hesitating to see a gynaec personally