Dear dr, I am a 44 years old circumcised male, 4 days ago I had sex with a csw in abu dhabi, uae. While having sex with the condom broke, it was not more than 10 seconds before I found out, no ejaculation happened and I had no open sores on my penis or any other cuts, yet still I found a tiny amount of blood on the condom, I can't think of any reason for the blood except that she it was menstruation blood? just the beginning of it- I am of a good general health, smoker and have never been diagnosed with any std or any serious disease, right now I am freaking out because of the hazardous of hiv that I have put myself in. I have asked her if this was the first time for her to have a condom failure indecent and she answered yes, she even had a general blood test for a full checkup and she was in good health as well as the hiv blood test 2 years ago for residency visa and she already has her uae visa stamped (which means she was a negative at the time), my questions are as follows. 1- I have read somewhere on the internet that the risk of transmission from a single encounter of unprotected vaginal sex is 0.065%, meaning that 99.935% do not get hiv, is that true? 2-do you recommend I get tested for hiv? I am thinking of getting a pcr test to check myself, how long should I wait before getting tested (pcr) and how accurate and reliable is that test? 3- do you recommend that I go for the pcr test or should I go for the 4th generation test and how long should I wait as well before the result is conclusive? 4- dose being circumcised have anything to do with minimizing the risk of hiv infection? 5- dose the presence of menstruation blood increase the risk of hiv infection? thank you in advance for helping me on this, I would really appreciate to hear from you as soon as possible as I am really freaking out.