Apple Watch not charging?

I plug in my Apple Watch to the charging cable. This has happened to me twice. Should I pop over to the Apple store?

After the last WatchOS update (last week) my Watch 4 was burning through a charge twice a day. I hard reset it, as suggested by @Wolfie, and all is well again.

I’ll plug it in to make sure it charges and then hard restart it.

Just force restarted it. It’s all charged. It seems my cable wasn’t in the usb block all the way hence it not charging entirely.

Still not charging, I’m going to try another outlet to charge it as my power strip might make it come loose at night when I’m sleeping