Coming off?

So last September I was 14 years old and had my period for 2 years and i was put on a very low dosage of birth control because I have super irregular periods. They said they wanted to put me on it for a little under a year and see how it goes. I had a follow up and they said I should stop around June and I don’t really know what to expect. I have heard it causes bad acne? Would it be different depending on dosages and how long you have been on it? I just don’t really know what I should prepare myself for. I am on Accutane(acne meds) and I possibly might end my treatment before I’m done with my birth control so I would have no protection towards my pimples. Just what should I know and expect?