Hello Sean, please answer my question and help me release my increasing anxiety. I seperately had sex with two girls who are not my girlfriends and who are absolutly not sexual workers. And I asked their sexual history and I knew that they are also care about their health and they used condoms when having sex. They both come from wealthy family. Of course I used condoms during the whole process. Additionally, I had an surgery operation 2 months ago and the hospital tested my blood which is extremely clean. But the sexual behaviors happened after the operation and I just feel anxious becuase I tell myself the probability to get transmitted,however near to zero, is existent.I am anxious now because if what I did was risky, I perhaps will not have sex in the future, which is impossible. Please help me.