You have nothing to worry about since he did not ejaculate.
so me and my boyfriend were hanging out and I gave him a hj and he didn't finish and we don't think he excreted pre *** because there was no liquid. and then I went to go pee right after without washing my hands and the wiped my vagina with toilet paper to clean up and never made skin to skin context with it. and I was expecting my period but it's a couple days late. is there any possibility that I'm pregnant?? PLEASE HELP