Birth control question

Mikala

When I started my birth control, I took it at 6:30 PM religiously but that only lasted about a week and a half.. now the time I take it fluctuates. The range is pretty big now. Could that affect my risk of pregnancy (as we don't typically use protection except for pulling out) and by how much? If so, when is a good time to start getting back on a time schedule? I'd like to change the time I take it to 9:00 PM but don't know when it's best to do so or if that's even safe.. sorry, a little uneducated when it comes to BC. I just know I have to take it around the same time once a day, lol. Thanks