Tips on sleeping

6 months and it's getting harder and harder to sleep for more than 2 hours at a time- cannot sleep on my back feels like I can't breathe also heard this is no good for baby- but sleeping on my sides has made them incredibly sore which leaves me tossing and turning all night long also started with heartburn Which is 10x worse at night I eventually just give up on sleeping altogether and am on glow at 330 am lol - any momma to be's with advice on anything I could do