Apple Watch Screen

I went swimming and started the swim workout on my watch. After a few hundred meters I was done and tried to stop my workout but my watch wouldn’t let me. I lost touch functions and the watch died. It wouldn’t charge until the next day and seemed to be back to working properly but 4 hours later the screen went black and has not returned since. I touch ability and the sounds, notifications are coming through. I just can’t see anything on my watch. I have turned the brightness to the highest level through the app on my phone and still nothing. Can anyone help Otis my watch face burned out?