Is it possible to get pregnant?

Cheska

Im supposed to have my period on April 10 but im 3 days late now, me and my bf had some sexual activity on April 7. Is it possible to get pregnant just by rubbing genitals fully naked (no penetration happened) and fingering afterwards? I'm overthinking that the precum might slip and enter inside my vagina and even tho he didnt finish inside, near, or on the vagina. Thanks for answering