Lower back injury weakened pelvic floor.

Help. I’m 19, Female, and have suffered with vaginismus my whole life, severe pain during sex, could hardly even fit a finger in there. Doctors said I needed pelvic floor therapy to relax my pelvic floor. Always have had a really strong bladder and wouldn’t need to pee much despite being hydrated. Just over a month ago I injured my lower back by picking up something weighing 40kg. The pain wasn’t immediate but the aching gradually came after. The first two days the pain was pretty bad, but after that the pain vanished. When I would pick up heavier things at work, I got flare ups and the pain came back in waves. I also realised that my pain during sex has completely gone and feels normal which is a plus! Now it’s been a month and the pain is constant. My bladder has definitely got weaker and when I sneeze I leak which is just so not like me at all. I’m just confused by it all as the back injury was pretty minor I would say, it only felt like a strain and I could do everything as normal after it despite slight discomfort and little pain. Not quite sure what to do from here, I don’t know how my pelvic floor went from extremely tight to extremely weak in a short amount of time :(