Dear sir, I am 23 years old male. I did biggest mistake of my life. 27 days ago, I had oral and vaginal sex with escort in paris.It was with condom. i think she was brazilian. It was my first sex experience in life. She changed the condom after oral sex. It was the new condom for vaginal sex. But after vaginal sex I did not verify carefully whether condom was broken or not. are the chances of breaking condom less? after that day i am constantly thinking and worying. I am panicked and stress till now. After 3 weeks I did HIV antibody and antigen P24 test (Abbott CI8200) it came negative. I have mild headache, sounds from stomach and sometimes cracking noise from joints but without pain. in last week, for 2-3 seconds i had sharp pain in bladder and then i went to urinate. then next day I did urine tests for UTI, chlamydia, gonnorhea (after 21 days); all came negative. I went to STD specialist after 12 and 19 days. they said me that there is no any symptom of STD on body. I did herpes, hepitatis c test, syphillis test after 21 days, all came negative. Should I do antibody and p24 antigen test after 28 days of exposure? im freaking out. please help me. please