My screen will not change from the apple logo. I have tried force restarts and nothing is working

Does anyone know how to get your apple watch to "unlock" from the apple logo on screen. I have tried force re-starts and nothing is working. I have a series 3 and I did get notices last week regarding needing to delete things because storage was getting 'full'. I deleted some apps via my iphone (for my watch) but now I can't use my watch at all.