You get used to it after a few days. Do you fear walking down the aisle in the supermarket with tampons and diapers? You shouldn’t. It’s just facts of life stuff.
That said, I’m convinced that many area of the USA are clearly not ready.
I’ve used ladies rooms if empty. Not in grammar school but as an adult? Sure. When you gotta go, you gotta go. I’ve seen women waiting outside bathrooms while I exit a now empty men’s room. I say, “It’s empty, why wait?” and they knock me over to get in there.
Different worlds I guess.
I’ve showered non-sexually with women (college). All depends on how safe the environment is I guess. American South must be dangerous. I’m in Florida but where I’m at isn’t all that Southern.