Am I pregnant?

last night I went skinny dipping with a guy and we made out and he fingered me a few times in the pool. when we got out, he had an erection which makes me nervous that he ejectulated in the pool (even though no sex wasn't involved) but I can't contact him and ask if did ejectulate or not because his phone broke earlier that day. I'm freaking out right now. what if I'm pregnant? thanks ladies 
UPDATE: do guys ejectulate every time the get an erection though? he didn't masturbate or anything but he was holding me like the whole time we were in the pool so if he did there's a really good chance I'm pregnant right?
 can someone who really knows what they're talking about help me out?