Confused asf

Okay so April 21st me and my boyfriend had vaginal sex about 3 different times that night without a condom he came in me and everything. Like everything was fine but then we tried this lubricant Called chain reaction with warming and cooling sensations and I put it on my coochie and it burned so i took it off right away. So a few hours go by and now my boyfriend wants to try anal so he put the lube on and it still burned me and i wanted to take it off but he thought i was being dramatic so we did anal for like 10 minutes and then stopped and like my ass burned for a lil while. But then a few days later i got these bumps around my ass and then they blistered and now they’re lesions. Could this be herpes ? And if so why isn’t it on my vagina as well. We had sex vaginally wayyy more and he came inside me everytime. Wouldn’t that have been infected too?