I mean I'd say I have decent mobility. Not as flexible as when I used to do track but I try to stretch and foam roll as often as possible. No past serious injuries to that knee.
Been lifting seriously for about a year and a half.
It had been 10 days and suddenly my knee was hurting out of no where.
I feel better now I can feel the pain slightly when I poke it, but I'm a little worried it might've been a bad sign since a random day of knee pain seems odd to me.