If you can take a bath when you feel ill it also helps the pain

Oh and don't have the shower too hot. I've found I don't feel so nauseas afterwards. I like having real hot showers cos it helps ease the pain but I've noticed if I turn the temp down a little bit I don't feel so exhausted.
Also if showering in the morning, have breakfast first and make sure you've allowed time for meds to kick in.

I struggle with this too! Here are a few things I've found to manage it.
-Use a stool or chair in the shower. I just got a cheap outdoor plastic one.
-Shower every second day if you need to. Wet wipes are great for the day you don't shower. When I'm in a bad flare showering every second day helps. It took me along time to get used to it cos I'm more of a shower everyday person.
-Dry shampoo!!! If you are not up to washing your hair...
- Shower at night. It's a bit of a hit and miss. Means you can go to bed and recover straight after but then sometimes by night time I'm too exhausted.
- Sit on a chair in the bathroom or on my bed to get dressed. Makes sure Where-ever you get changed is warm.
- Soak in a bath (if you have one). It helps the pain and helps me relax before bed time.
Hope this helps. 😃

I'm so sorry you're struggling sweetie. I cannot stand to shower so I've taken to having baths and keeping my big red bowl with me to rinse off the soap/shampoo.

Hospitals have the shampoo caps that wash your hair I used them when I had knee surgery I will try to find name of them maybe can try those work pretty good