Advice on excess bleeding

I know this is probably something that’s normal after quitting birth control but I’m really worried rn about how much I’m bleeding. For the past 48 hours I’ve had to change my pad twice every hour and they are the overnight ones. I’ve also thrown up everything I’ve eaten and the cramps I’m having are the worst pains I’ve ever experienced (and I have horrible cramps during a normal period so this feels like hell). Is this normal after quitting birth control? My girlfriend wants me to go to a clinic if I don’t stop bleeding like this by tomorrow because I’ve passed out a few times. Any advice would be helpful right now.