The CDC has a tool that will help you get an estimate of risk based on your sex choices and risk reduction practices:
[think before following links] https://hivrisk.cdc.gov/risk-estimator-tool/#-sb
Bottom line is that based on what you stated above, your risk is pretty low and the chances that you are currently HIV+ are slim to none (way less than 1 in 1000). That's assuming your BF is negative, of course. But it's extremely easy to find out: Just get tested already!
If you decide that your risk is low enough that you choose not to use PrEP, I'd strongly recommend getting regular screening for HIV and other STIs, especially if you play outside the relationship. Because (1) the others are much easier to catch than HIV, (2) they increase your odds of contracting HIV if you are exposed and most importantly (3) if you do pick up something, you'll be passing it on (whatever it is) until you get it treated.