As you know, you have posted on the wrong site. Questions about HIV belong on the HIV prevention site. I will do my best to answer your questions with this reply but, if you have additional questions or follow-up they must be on the HIV Prevention site. Sorry.
As far as an assessment of your risk I will be pleased to comment. Your risk is very low. Let's do the math. for heterosexual African American men, the likelihood your partner had HIV is far less that 1% but, just for argument sake, let's say it is 1%. Then the risk of getting HIV from a single sexual exposure in less than 1 infection per 1000 exposures. Thus, on a statistical basis, your risk of HIV in this situation is less than 1 in 100,000 - really not something to worry about.
I also realize however that statistics are often insufficient relief for anxieties once they get started. Thus it makes sense for you to seek peace of mind by getting tested. In your case, testing at 4 weeks would detect 90-95% of infections acquired a month earlier. At 8 weeks virtually all tests would be positive if you had gotten HIV. Thus for you a test at 4-8 weeks should provide you with reassurance that you did not get HIV.
I hope these comments help. In the meantime, believe me, you really have almost nothing to worry about. EWH
I just noticed i put this in the wrong forum, im new to this site and didnt quite understand it. Please still help me out so i dont waste my 15 dollars.