I had a risky encounter 51 days ago, when condom got teared during anal sex, i was the insertive partner. After few week i developed a single rash on my chest. Since then i had been developing 1 or 2 rash frequently..but the next rash appears only when the previous one has subsided. Over 51 days rash appeared on my chest back, leg , thigh, forhead , hand. I had diarrhoea for 2 days at 49th and 50th day. Also i have tested negative at 43 rd day on hiv 4th gen. Ag ab combo test. I am under extreme stress.. please help.