It's frustrating for sure. Especially with everything we have to think about before surgery.
As an office manager, I can tell you that when someone is unexpectedly out sick, it can cause a lot of strain and backup, especially in a busy office like a medical office. You are likely not the only patient experiencing a delay. I would give them the rest of the week and call again first thing Monday morning. If the person who submits paperwork for your doctor is still out sick, and they still haven't submitted your information, I would nicely ask for the office manager or a supervisor, and just calmly explain what's been going on and ask of she can help you and get your paperwork sent out.
Take a deep breath - it will all work out!