My first surgery, I couldn't sleep on my left side for at least 7-8 weeks and I healed smoothly with no unpleasant bumps. It just took that long for me to be comfortable.
Four years later, same surgeon, same hospital, same incision re-opened and I was able to sleep on my left side in about 3 weeks.
We are not only all different, one of us to the others, but also to ourselves, one surgery to another.
Best wishes. Hope you sleep well very soon.