Hiv related dermatology. Kind of std?

Regarding my exposure I'd safe vaginal intercourse (condom completely didn't slipped away),deep kissing and fingering (no oral sex) with a massage therapist But from 9th day of exposure till 60th day I'd sore throat, occasional raise in temp(99-100) did so many tests 9th day---antibody(-ve) 20th day---4th gen test(cmia)(-ve) index value:0.09 28th day---rna pcr test(target not detected) 36th day---hiv duo test(cmia)(-ve) index value:0.05 56th day(8th weekend)---hiv duo(elfa)[antibody-0.03 and antigen:-not determinable] Doctor said you're free from hiv but right after two days I got a string of rashes on my arms(attached) is this hiv or anyother kind of std?? Please help me out sir with a lot of anxiety I feel like dying