Boyfriends snoring is becoming a serious problem

Ha
I cant sleep as great as before being 32 weeks pregnant and uncomfortable so he always falls asleep before me and his snoring is getting to be so freaking annoying. It prevents me from falling asleep. I had him sit up kinda one night and that helped soooo much but he said it was uncomfortable so he won't do it again. Does anyone have any suggestions? I'm seriously so frustrated but I know he can't help it