I got a urinalysis this afternoon as recommended yesterday by the doctor. Lo and behold, I don't have UTI, so that means the culprit for my rash is still unknown.
My family is also saying different things which makes me even more confused. What a weekend this was, I wish I can just contain myself in my office room and get things done - peace, quiet, and productivity. Now I think I'm starting to itch. I'll see another doctor tomorrow morning and I look forward to a more definite answer.