Well the rash appeared the next morning and looked more like a shving rash or heat rash but since I was stupid enough not to wear a condomn I felt a bit anxious. The rash has cleared and I have experienced no other problems. But would having a full test at a clinic but the best option?
(not an expert, made a post minutes ago) well if you read some of the posts, I would take a rash after sex, with healing 10 days after in a heart beat. I am guessing that it depends on when the rash developed, a day after sex? 5 days after sex?
It could be due to friction, skin irritation.
Whatever advice you recieve in the forum, does not supercedes a medical examination. But, I am sure (with my non-expert opinion, with a long post myself) that it is not an STD.