Need to take a shower, but I'm scared if stand in the shower I'll pass out?

I have this bug that everyone is getting where you're just constantly throwing up, and all you do is lay in bed and drink water/Gatorade.
I think it seems childish to have someone help me, but I've passed out once before in the shower and almost broke my neck. My joints feel like they can break at any moment. Any advice?
Need to take a shower, but I'm scared if stand in the shower I'll pass out?
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