I also slept in a similar position. Since you're at the four day mark, your grafts should be just fine with no danger of dislodging at this point (under normal circumstances). I also do not think you have to worry about any scarring recurring at this point. You should be just fine. If you want to see what to expect going forward, you can visit my blog (below). I documented everything with narratives, pictures, videos, etc. Just look at the archives on the right side of the screen and click on September 2012. Good luck! You have a lot to look forward to in 3-4 months.