Is The ELISA Test After 3 Months Recommended Here?

Hello Doctor Prasad, I need your expert opinion on my case. I am 39 years old male and with lovely wife and 2 kids. I am 10 years into my marriage and never ever had any relationship before/after marriage ever. However, I got myself into a situation first time ever in my life, when I was in Bahrain recently and met a turkish prostitute in the Bar and we end up being in my room. Although I used condom for the intercourse, it got broken and I found it only after the intercourse. I got terribly scared post that incident and had enquired with the her on her status. She maintained she is HIV negative (though cant rely on her statement). I started reading on the net post the incident to explore the testing option. Though I understand it is said that ELISA test post 3 months is the conclusive one, I still went ahead and did a 28 days P24 antigen + HIV antibody test using ECLIA method at religare lab in Mumbai. The result was NEGATIVE. On day 30th I am experience Diarrhea and started worrying again. I need you sincere opinion on my situation and your view on 28 days Early screening test and . Many Thx and Kind Regards D