[STD Question] Freaking out after my first homosexual experience

so last night I was drunk and decided to check out what Grindr had to offer. I met a guy on there and he told me he was STD free. I told him to come over. He started by giving me a lengthy blow job(no Condom). I tried to suck his cock (no condom) for about 20 seconds but I wasnt really digging it. He then fucked me a little (with a condom) but was to big and it hurt. I was drunk and couldn't get hard so I didnt have my cock in his ass.Now im freaking out because I am ignorant about STDs in particular HIV. can someone fill me in on the risks based off my experience last night?