Am i having anxiety that causes such symptoms?

I had unprotected anal sex 5 weeks ago with a man. 

3 days ago I got non-itchy rashes that were red and had something like acne in it on my legs only. I don't have rashes on chest or arms or palms. I don't have fever. I don't have flu that people describe it as the worst flu ever. But i've read that hiv rashes are non-itchy. I'm still waiting for the test result coming on monday or tuesday. But i'm so anxious that i started to have headaches (one of the hiv symtoms).  Yesterday it felt like someone put a ice pack on the back of my head. I am so worried. I read about things everyday. I try to go out for a walk but that mindset keeps coming. I can't enjoy things. I look for every detail and every symptom on my skin.

I'm still waiting for my test result next week. I tested for 3 days ago and the doctor said if there is something they would call me after 7 days at the latest.

Have anyone experienced this anxiety and how did you over come it? 

I had an STI scare late last year after I had a one night stand with a mystery girl, but everything turned out to be normal. It was unprotected and I started to imagine symptoms because I have health anxiety. Ultimately, I was screened for everything, including hiv and syphillis. The results came back clear VERY fast in my case. I was quite anxious in the meantime, but all you can really do is try to find something else to focus on. Worrying isn’t going to help, and the likelihood that you contracted hiv from a single encounter is relatively low from what I understand. I’m sure you’ll be fine, ultimately you should take this as a learning experience and use protection next time (sorry, I don’t mean to lecture, lol). 

I am so anxious and stressed that it started to develop headaches and muscle pains. I don't know what's going on in my body. It's just spinning around in my head. 

But thank you so much for even replying to me and sharing your story. I appreciate that a lot