Should I be worried about infertility ?

I'm only young and by no means want to get pregnant at this stage in my life and I've been pretty irresponsible with birth control; not using condoms, I'm not on any other contraception either and I do sort of rely on the fertility tracking method, but sometimes I slip so I have had unprotected sex in my fertile window and came in a fair few times and I feel like I should've had atleast a pregnancy scare by now?? I know it's stupid to be taking such little precautions but is it stupid for me to be worried by the fact I've been so lucky ? Could I be infertile ? please no hate or patronising