Should I be concerned?

Long story short I have been taking the pill for about 5 years. Throughout those years I have constantly missed pills, anywhere from a few days to a week.

I also have been in a relationship for 5 years and obviously have been having sex regularly throughout so my question is should I be concerned that I haven’t got pregnant?

Obviously the reason I took the pills is to avoid pregnancy however I couldn’t help but wonder why at 16-22 I haven’t got pregnant. I see so many girls get pregnant after missing 1 pill and I also see many saying even if you miss a pill your body is still preventing you from getting pregnant 🤷🏻‍♀️

What are your thoughts?