I've been flossing usually twice a day, sometimes only once a day, pretty strictly for the past 2 weeks or so. mostly because my grandma bullied me lol. However it still hurts? when does it usually go away?
Had problems in my 20's (30 years ago), old dentist: "use mouthwash 2-3x a day, and not that newfangled nonsense, I mean Listerine. Yea, it tastes awful, but it works." hahaha
Dammit if he wasn't right about my issues at the time.
And modern electric toothbrushes are a game changer. Not like the truly electric (as in you plug it in) when I was a kid. I think improved brush heads and especially the built-in timer make the difference.