May b Lyme disease. Bt i m worried.

Doc its a big story.I need ur help.On 31 i went to a party.I was drunk and next day morning i found some wound on my arm and shoulder and dnt remember abt previous night.Later on 1st night wen i observed i tht it to b prick or injection.so was tensed.On 13th gt tested for HIV PCR or nucleic acid test.by 17th results came to be not detected so was rlieved.But around 13 i had strange symptoms like stiff neck as if being choked,freezing headache,nerve vibrations...I was seen lter by pschiatrist he hd given m few meds i hd tken fr 2 days felt bit relief bt discontinued.around 17 i developed new symptoms i vomited watever i was drinkin or eating like in form of flem..got admited fr 3 days n doc had told hve acute gastroenteritis.Doc nw i hve little joint pains n slight itching.so is this lyme disease or somrthinh els or just my Anxiety.chokin has been there since 10 days nw.pl advice...I m right nw continuing the mentioned meds n feeling slightly bttrr bt i m worried.