Extream Heavy period after Birth!

am 9 weeks postpartum and my period has returned. The first two days were light and normal. Day 3 took a turn and my period became extremely heavy out the blue. It is so heavy super plus tampon chilled up within 15-20 min of being put in. I start using the super heavy flo overnight pads and those are completely filling up within 3 hours! Is this normal??? I sent a message to my doctor through the patient portal. Just waiting to hear back from her! I also had a tubal after c-section and a friend who had one told me her period was extremely heavy because the tubal. I’m wondering if other women are experiencing heavy periods afterwards?