so i had unprotected sex, and my boyfriend came in me on a saturday night and my fertility level was a 22%... i took plan b on monday evening bc i was nervous id be pregnant and the next day i felt so nauseous... i figured the pill worked. i was supposed to get my period a week after and now it’s been 10 days and i haven’t started yet.... should i be worried or is this normal 😩😩😭