Apple watch screen is blank, only lights up if I touch it.

I've had my apple watch for almost a year (Christmas gift last year) and all of a sudden it is blank/black screen. It only lights up if I touch the screen. I've turned off my watch and rebooted it and still does the same thing. It did the same thing a few weeks ago and the only way I was able to fix it was by doing a factory reset. I shouldn't have to do this every time. Any ideas? Nothing was changed in my settings, it just started doing this all of a sudden. It vibrates when I have a notification but I can't see the notification unless I press the screen.