I think my boyfriend gave me an STD?

I am afraid that my boyfriend has given me HPV...or some type of STD. He has had 10 partners in his lifetime which I consider to be a lot and I am pretty sure he has not used protection with all of them. I love him but I do not want to subject myself to diseases or whatever else he may have considering how rampant std's are nowadays. I don't know what to do. Should I leave because of my fear or stick it out?