I Have Small Bumps Near My Vulva?

So here comes the huge story..with a few questions to accompany it. My ex boyfriend and I were sexually active, and had sex unprotected once or twice (no more than that, no lie), and neither one of us had a huge sexual repertoire. He was a virgin before me, but I wasn t before him. I had sex with maybe 4 other guys? and all protected except one. me and one of my other ex boyfriends, who was a virgin and also inexperienced - I mean seriously inexperienced..no exposure to anything overtly sexual, had sex in a lake one time (I know, I m not the smartest). He didn t cheat on me, and we were both clean. But now my ex boyfriend is accusing me of giving him HPV, when I don t know where I would ve gotten it from. Worried, I .self-examined..myself, and found small bumps near my vulva that I don t recall having, partially because I ve never cared to look there. And I ve heard many other things can contribute to bumps, like rough sex or stress, that time of the month, etc. I ve had rough sex within the past 6 months (protected), and I m thinking that the pain I sometimes experience during urination could be due to that. Also I sometimes lose my self-lubricant I guess you could say during sex..Is this altogether one huge fiasco STI, is it HPV, or just something minor (crossing my fingers). My ex seems to have told me that he had a lot of experience (excluding sex) before me, but is now denying it, and is dumbing-down any hookups he s had since then. Any suggestions?