Was my birthcontrol still in effect?

Patient: I have been on BC for 3 years now im 15 I had sex 4days ago . I ended my pack of pills on sunday adn missed all the way till thursday so once I got a new pack on thursda I took 2 a day until I caught up to the day I was on so for about 3-5 days I was taking one a day before I had sex. I keep having brown dischage just a little bit thought but I REALLY REALLY DON’T WANNA BE PREGNANT. Please help me and answer I need to know if birthcontrol was still in normal effect and IM NOT PREGNANT please help me I need to know if the BC was still in the proper effect.