Two weeks ago, I received an oral sex from a guy who I've been dating for awhile for the first time. At that time, he used his finger to stimulate me anally. About a week later, few red bumps that looks like mosquito bite came up on my face and my back. So I went to see the doctor to make sure it's nothing serious. I was told it wasn't rash(because there was no pattern) and was prescribed some cream. This week, I'm a bit feverish, my energy level is low and my anus is tender. I feel discomfort during bowel movement. Other than that, my appetite is normal and I have no diarrhea. I saw doctor the other day and she didn't expect STD. However, she recommended me to do the blood test. I did yesterday, and I'm very anxious about the result. Could it be STD? (Sorry about my bad English)