Feeling anxious

Hi! My anxiety is killing me rn. My period is supposed to arrive tomorrow but I'm afraid that it won't. My boyfriend fingered me a week before my ovulation, he said that there was a drop of semen in his thumb but he cleansed it off with alcohol before fingering me. I'm afraid that the semen made it inside me and possibly made me pregnant. I know I sound stupid to some but I'm tearing up already and I don't know what to do. Help