All the best for your operation!!! Don't think I've ever gotten anything removed but my friend did get her appendix removed back in secondary school(took a while to find out though since she thought it was period pain)

When I was stuck at the hospital a while ago, I re-listened to a podcast I love called "Welcome to Night Vale" so if you're bored on that hospital bed, maybe give that a listen! Sometimes the voice behind the podcast can be soothing to make you fall asleep too(at least for me haha)