birth control withdrawals

Hi everyone. I'm 19. I've been on the pill since I was about 15 or 16 to regulate my period. I recently stopped taking the pill because it is no longer helping with my cycle, even though my doctor has changed the dosage and type of pill many times. I stopped taking it about mid July. Because of how long I've been on birth control, will it be harder for my body to get use to not taking the pill anymore and become a little troublesome to get pregnant ?