virgin sex???? can i possible be pregnant????

Hi my boyfriend and i did some sexy stuff earlier this afternoon. We didn't do any intercourse (still a virgin lol) just dry humping, oral and hand sex. I did him a handjob and he came and his cum was on his tummy. I unconsciously sat on his tummy and my vaginal opening was under the cum lol my informations are minimal.... can someone please fill me infos about chances of me getting pregnant? My period's been irregular though ever since and it's been 2 months already since my last period thanksss