Im day 6 and sleep on my side as well but use a small pillow to hold my stomach and so far that has worked for me.
I was sleeved may 25th..
Still have some pain from gas and the big cut..
Not sure if I'm eating enough but I have had diarrhea and gas but no burping gas..
I feel alot of bubbles in my chest and when I drink a cold drink like gatorade zero once it hits my stomach it hurts.