Hi doctor, I m a 33-year-old male. I had exposure on 19th feb with a csw (female). I used condoms as far as I can remember but oral sex (mouth to vaginal) was unprotected. I took pep within 18 hours and continued for 30 days. Day 33 - rna pcr test - negative day 75 - elisa test - non reactive day 90 - rapid eclia hiv1/2 serum test - non reactive day 117 - p24 duo hiv 1/2 - non reactive im having chronic diarrhoea and gastric since day 33 and was diagnosed with h.pylori. Took pantocid hp kit for 10 days. Recently started having frequent urination but not pain or pus discharge. No genital infection or swelling observed can I sero convert after 4 months? What could be the cause of frequent urination?