Just wondering-birth control-the pill

Hello everyone,

I am not pregnant, but I am just wondering why people still get pregnant on birth control. I am on the pill and I would like to take all the steps possible to not get pregnant, especially right now in my last semester of college.

I have my pills stored in their pill wallet in my bed room that is always cold.

The reason im asking is to make sure I take every step and my next period is to come Saturday so I do not want to stress out about it once again.

I take my pills between 9-10:30pm everyday and never missed a pill at least for the past few months

My boyfriend is very trusting because we have been doing the same thing for years (4 years) and no pregnancy. We use the pull out method and only have sex once on my ovulation days without a condom then with a condom the other times and are careful.

Im just wondering because I hear so many thing about birth control to working and to not working. I guess I am confused at this point.