I am a 21 year old male who had unprotected vaginal sex about 40 days ago with a girl I don't know. I have recently been tested for chlamydia, gonhorrea, syphilis, and hiv, all tests coming back negative. I was not able to be tested for herpes since I live in Canada and the blood test they do here does not distinguish hsv1 from hsv2.
The symptoms I have been experiencing have been noticeable (I doubt that I am just letting anxiety control these symptoms). About 10 days after my encounter I noticed a red spot on my scrotum, it is not raised, didnt form a blister and it is alone about 2mm by 1mm. It does not itch or hurt and I have no discharge from my penis. However, my testicles seem to ache and I have noticed that my lower back aches as well more often than it normally did before. Also, my anus seems to itch a lot. I have looked over my entire boxer short area and have found no blisters, clusters, ulcers or anything else that would be a giveaway of warts or herpes but I am aware that symptoms vary.
My question is basically this: Do my symptoms seem like they could be related to any STD? My anus has never been touched, penetrated, licked, or anything by my sexual partners so could the itch be related to an STD? When I went to the doctor she dismissed the possibility of me having herpes because she said that I would feel immense pain during the initial outbreak, is this the case?
Thanks a lot for your time in helping me out, if you need any more information from me I will be happy to provide it.