Are u wearing a macom? Sounds random but I found that my Macom was ruining my back/spine and hurting my boobs to, I had a really achy pain going through the both of them. Could be completely different to yours but I changed from my macoms to my sports bra’s and I feel a lot better! I was also sleeping flat and it helped my back so much and only had stiff achy boobs when I woke up for some at strange reason. Sorry if I’m not much help! Hope it gets better xx