I had many pillows. One big wedge pillow about 50cmx50cm. I could sleep on it on my back or sides. I'd rotate throughout the night. As I wasn't putting pressure on any veins, it was safe for me to sleep flat on my back. I didn't hear the snoring, so it didn't bother me

i also had had a smaller wedge for the belly, another pillow at my back and another between my knees. By the end of it, I'm pretty sure the pillows were breeding. They'd taken over the bed and DH was in the spare room.