Still on period at end of pill free week

This exact same thing happened to me. It needs to even out so for the next few months it will be all wacked, then after a couple months it will become regular. Give it about 3 or 4 months to become regular. It may be extremely long or extremely short, it will just be all wacky until it finally evens out. You need to continue taking the pills regularly, and don't take them on certain days just because you want it to stop or come on certain days, that will not work. That'll mess it up even more. You have to let it run its course.