It might help to make your bathroom or shower area an attractive cozy place. Use shampoo and soap or body wash with pleasant aromas. Maybe use a few candles (they have battery operated ones too). Play your favorite music. Pamper yourself. Get the more expensive shampoo or soap. Get your favorite color towels and cloths.

No one is looking, so no need to be ashamed. Find something positive about your body and appreciate it. I don't know your body size or shape, but you seem to be a really sweet and loving person and that matters much more than your physical looks.