i have the Apple Watch series 6, after swimming the temperature icon came on and it’s stuck there ! It was never in a hot environment.

He have the series 6 watch, I went swimming yesterday and it started restarting and said it was in high temperatures, which it wasn’t ! Now it’s stuck on the temp icon even though it has “cooled” down. I let it sit off my wrist for a few hours, it automatically restart every 2 min , i tried to restart many times , charge in cool condition with no change..

What shall i do !