Can anyone give advice? 5’2 in a 12F at 19. Back pain is killing me rn.

Hey yall!

Just got resized after being a long time 12E girlie since I was 14. Turns out I have gone up a cup size and I desperately need some exercises or tricks to get rid of the back pain, I’m 19 at the moment at 5’2 so I’m not hopeful about stopping at an F cup.

I do a lot of heavy lifting at work that doesn’t help and I can’t afford to spend a lot on more supportive bras.

Any advice would help 🫶