Yes you can have a family member stay with you. They check temperatures at the front door and ask if you have any symptoms for covid, other than that you should be fine.
Yes I had a leg amputation and my better half stayed with me.
Your physician determines where the procedure will be performed. Your symptoms are not uncommon. Explain your concerns and your condition at every stage: Pre-Op, Post-Op, Recovery. I am sure they can provide sedatives or more long-term medication. No, given Covid 19 protocols, only brief visitations are normally allowed.
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