Discharge

Idk what to do. I’ve been really itchy down there all day. I had a lot of yellow, almost kind of orange, liquidy discharge once and then it went back to normal. It smelled awful so I showered and shaved down there and the smell has been gone ever since and the itching has gotten a lot better but still. I did have unprotected sex twice with the same guy within a couple hours 2 days ago but I think it’s too soon to be an std. I googled it and it said the itching could be coming from micro-abrasions from really rough sex and the yellow discharge could be from just finishing my period. Could it be a yeast infection or bacterial vaginosis or a uti? Should I go to the doctor? I’m so scared that it’s chlamydia i feel sick