OK - a bit OT, for those with chronic snorers (Not sure pregnancy snoring counts!) there is actually something you can do. Get assessed for sleep apnoea!!! My friend had excellent success with a mouthgard device which pushes your chin forwards a bit and then holds the soft tissues in the throat open! This was something she had to see a doctor about. She is sleeping like a baby for the first time in years. She couldn't afford to get the apnoea assessment done but we shared a motel room once and I lay awake all night listening to her stopping breathing and willing her to start again! If the sleep apnoea is a really bad you might need to consider a C-pap machine (feeds pressurised air in via a mouth mask which then holds the tissues open).

I don't think your PG snoring really warrants any of this, I just say, put hubby on the sofa, it is a small price for him to pay for a peaceful night, and don't feel guilty! You are growing a new life in there. The whole universe should stop and make way for that! Good luck and i hope you both get plenty of sleep in the coming weeks