Birth control

So I’ve been on birth control a little over a year now taking the pill I take it on time almost every day. But I’ve noticed my periods have been all weird like either really long, it could be 2 weeks to less than a week so I switched birth control pills about 3 months ago that have the same dosage every week and then the sugar pills but I’m still having the same problem with it. Just wondering if I should just stop BC or continue it I just hate bleeding/ spotting for a whole month.