Is this ARS? Really scared please Help

[Ter90]

Hi. I beg you for your help on this. A couple of weeks ago I had protected anal sex with a sex worker i was the insertive partner. It didnt last more than 2 minutes and as long as I know the condom didnt fail (would I have noticed it?)
I have to say that I cant stop reading about this on the web. I had a very mild sore throat one day after and now I have this red skin under my neck, shoulders and some of the chest. It feels like a sunburn and itches.
I have so much anxiety that I had the sex worker tested and it came negative, although I read in a forum that he could be in the process to seroconvert. Its been 12 days and I cant stand this anymore. Please let me me know what is the chance that I got the disease. They say that zero if i used a condom but how to know if it failed? What is all this red burning skin about?
Thank you a lot.

[Vance2335]

Confused at what I wrote to you?
YOU DID NOT HAVE A RISK.

[Ter90]

Hi. I just tested negative today after two weeks, with a Duo combo test. I know this is no way conclusive but wanted to know that if my symtomps would due to infection would i tested positive?? Thank you

[Vance2335]

You used a condom (yes it would be clear if it broke), you did not have a risk.

[Ter90]

Please someone help. I am a male by the way

[Ter90]

I forgot to say he was a male sex worker.