sir i having unprocted sex december 4th but dec 20th red itching my penis i consult doctor he,s giving anti biotec tabs 1weak courece ,

an jan 8th i consult to doctor said bed bits , but that day my body upper chest and neck back side rashes coming iam full narvas that time. and morning wake up time rash lines comeing and slowly size decise jan 8th to till days , after jan15th mouth ulser and penis ulser ,i consult doctor and cure ,after i consult to st jhoans hospital demataigist. i said all my problems . so he teling . hiv test, vdrl test, happite b antigen surface test both are " negative "result even my girl friend result also "negative "after he s said this urticaria and he giveing 1 month cource tabs bt lititle bit ittcing witout rash whats problem tel me sir