Unusual rash and HIV risk

[woodline]

I had an exposure with an HIV positive person (insertive anal intercourse, maybe 30 seconds, no ejaculation, no condom) on or around May 20.  After just over five weeks I came out in a rash all over my trunk, light red mostly, spots spaced apart from one another although a few are more clumped together, with a couple on my thigh.  The day after I discovered the rash I had an Orasure HIV mouth swab test which came back negative.  This was 39 days after the initial exposure.  I am now at day 44 and the rash is still very much there.  There's no itch but my skin feels slightly irritated.  I've also had a cough for about the past three weeks, which was dry to begin with, then slightly phlegmy, then treated with a cough medicine that includes suppressant (dextromethorphan), expectorant (guaifenisin) and nasal decongestant (phenylephrine), and then dry again and still comes up every now and then.  So I'm also entertaining the possibility of an allergy to the cough medicine which I discontinued after coming out in the rash.  What are my chances of having HIV, and at what point do I need to go back for a follow-up test?  And what else could the rash be?

By the way I was advised two days after the exposure that PEP was unnecessary (I am in a relationship with the person in question, and he is on HAART therapy and says his most recent viral load tests have been undetectable).  But the rash, its appearance, and the timing, and the dry cough all raise concerns.  I have also had some night sweats.

[RainLover71]

You can take an antibody test now at 6 weeks and then again at 3 months.

[helpme2222]

since it was unprotected you must take a hiv test in 3 months