All my kids were conceived while I was on birth control
I have 4 children and all of them are birth control babies. My first one was while I was on the pill, i can not be 100% sure if I took the pill at the same time every day (don't really remember) but I know I never missed a day, the second was while on depo provera, waited 3 months to have sex never missed a shot. The third time I was on mirena and the forth after Essure . My doctor and I think that for me the hormones made me MORE fertile and that I was already fertile to begin with. I love my children and I wouldn't change anything but sometimes birth control just does not work for people.