heavy bleeding on pill

Hey y’all! So I’m on the pill, & i have been for years. Everything’s been fine, my period is super regular, same time every month, super light, no cramps, just great. My period isn’t here for another 2 weeks, but yesterday i had excruciating cramps that have led to today. I woke up and I️ have been bleeding more than I’ve ever experienced. The cramps are almost too painful to handle, & im going through a pad every hour or so. It’s definitely not normal for me, has anyone else experienced this? Thanks in advance!