I had almost exactly what you had. The surgery is easy. You're anxious but as soon as the sedative anaesthesia hits you're out and wake up having no memory of it all. It feels instant and you then wonder what all the anxiety was for. Seriously, don't sweat it. You'll shut your eyes then open them and it will be done.
The hard part is after the surgery, you'll have some pain, but the meds they give you will blunt most of that. And you'll feel so relieved it's over and optimistic about the future that you'll work through the miscomfort of healing.
Best wishes and please update us when you're done.