pregnant?

so, the past few weekends ive spent with my boyfriend. we’ve dry humped, oral, and hes fingered me.

when we dry hump, its just our underwear and he doesn’t cum.

during oral tho, he came all on my face and shoulders, and i immediately went to the shower, and now im scared some washed into my vagina.

and when he fingers me, im also scared he got cum into me through his hands if he had some on there.

my periods NEVER been late, it always comes early. 3 days late, nothing.

could i be pregnant or am i over thinking this?