Super heavy Period ??? (Possibly TMI)

Cierra • TTC Baby #2 for 5 years now. Just finished battling Complex Atypical Endometrial Hyperplaisia and starting fertility treatments!
Well AF showed up again this month and she is ANGRY! She is making it very obvious that we are not pregnant by making the niagra falls come out of me. It is day 3 of my period and it has been so heavy idk when I should become concerned. Yesterday I was filling up a Super tampon in 2 hours and today I ran out of Supers but am filling a regular in less than an hour. I haven't bled this much since after i had my daughter. I had a bunch of clots yesterday but none that I can tell today. At what point should I become concerned?