Hello. I have some questions about hiv. I was at barber shop today and I had a boil behind my ear and my barber was using a shaver machine and he accidentally cut my boil and it started bleeding a bit. I covered it with alcohol a minute after it was cut. I was worried is there any chance that I have caught hiv? And when can I do a test to be sure if I have it or not. For example if I do a test in like 2 month and it says negative can I be sure 100% that I do not have it or I should wait for like 6 month or more. I just had it 2 hours ago so I have not done anything yet.