I hope the blood tests that you had included 'other' STDs apart from retrovirus
serology, and if NO then to put your mind at rest, you ought to get the serological tests done to exclude a STD.
antibody test would be appropriate now given the time frame, but if you have had another encounter, then a HIV RNA
PCR would be the most sensitive test.
You must always practice safe sex in the future.
As for the muscle aches and rash
, there could be a few more differential diagnosis, but a blood test for complete hemogram, LFTs, CK levels, TSH
, ANA profile should exclude serious pathology if all are normal.