You can sleep on your side and not hurt anything. At first, it felt as if my liver shifted, when I was on my side. The surgeon said "he had it in tight," and many patients have those worries. Now, a year later, no weird feelings, though the area on the outside of the incision is still numb. But, at first I couldn't feel my side if my hand was touching the area. Today it's less numb and I can feel where my hand is. It could be worse, many if not most recipients experience pain, sometimes a lot of it. I'll take numb and weird, over pain. I suppose I had some swelling afterward, though losing so much weight, hid it. I'd be willing to bet that you are way better than before. I now know just how sick I was, because of how great I feel today.
"No good deed goes unpunished."