I keep missing pills!

I've been behind at least two pills for the past couple packs. I usually get my period only a day or two late when this happens. But this time I got it 13 days late on the start of my second week of pills. Should I be worried or is this normal? I just don't know what to do. I want to stop my BC pills because I want my body to do it's own thing but my doctor keeps trying to talk me out of it since my husband I don't want kids at the moment. Idk what to do. I'm also super busy with work and what not so making an appointment is really difficult.