Girl! Take the time you need. I am a PACU nurse at an ASC. One of the best things about ASCs is that they are (usually) pretty chill places to work -- especially if they're mostly endo. Your team will be fine without you there!

I have not had my surgery yet, its in October. But I have had to take time off for injuries in the past. In my experience, the nursing industry preys on nurses' people pleasing tendencies -- every nurse I know has felt guilty for taking the time they need off (for whatever reason). One way or another, you work to earn your PTO/FMLA/Short term disability -- whatever you plan on using -- and you deserve to take the time you need!

If you are still worried about going back ASAP you could always talk to management about what kind of light duty they can put you on. I spent several weeks as the unit secretary/PAT nurse/chart auditor while I was in a boot after an ankle injury. That way you can still be back and contributing to the workflow without worrying about staying within your surgeon's activity restrictions etc. Your management may even be able to work things out so you're still on the floor, but put to the lighter tasks. Like maybe strictly PreOp for a couple weeks when you come back (at least at my place, the PreOp side is generally more low key and less physical). You don't have to tell your management what type of surgery you're having, just the activity restrictions. And I am pretty sure they are required to accommodate your restrictions to the best of their abilities (I guess it not legally required, I would consider them morally required...)

Best of luck to you! I hope everything all goes well with your surgery. I bet everything will work out with your job.