I got this my d00d.
What might be the problem (this happens to me sometimes) is that your putting the Apple Watch on the charger and it would seem to be charging, but it isn’t. The charger has two sides, and one of them is magnetic, and the other one does nothing. You have to make sure it magnetically sticks onto the charger, and then something will appear on the screen saying it is charging. If that isn’t working, the charger may be broken.
Hope this helped my d00d.