hi i am sam 21 years old, i had unprotected sex(anal sex) with gay friend before weeks exactly little amount semen went inside me,i dn know whether he is affected by hiv but he looks healthy 25-27 years old, for past 1 week i affected by non continuous fever ,diarrea, only one red rash appeared in my hand and also frequent urination and dry throat. i am so stressed and worried.pls help what i hav to do