hard to afford during transition, but buy a less ->-bleeped-<-ty bed if laying on your stomach hurts your breasts. Laying on the floor hurt my breasts, and still does sometimes depending on how bad the carpet is, but seriously, a good bed will reduce your pain, improve your sleep, your happiness, and not hurt your breasts to sleep on (at least, for most people.)
I was a stomach sleeper, now side or stomach sleeper. i have scoliosis, so it messes lots of things up...especially curling up with someone to fall asleep with 🙁