I was put on cerelle as I can't take the combined pill anymore due to migraines, my periods seem quite regulated from the first pill, I had a week bleed the first week, then a two day random bleed, and a month on from the first bleed I had another pretty normal period! I don't mind a tiny bleed in between, I've had no side effects from it which I had with other contraception, just give it the three months to see if it helps and if not, try the combined pill if possible!