Moto G3 sometimes doesn't charge

As of now I've tested it a few times... My Moto G3 charges only sometimes. Mostly when I leave it turned off (though last night it charged while it was on). If I take the USB from the phone and put it back again, it stops charging. If, for some reason, it's charging while turned on and I unplug the USB, the battery icon stays as if it was charging for a while. Last time I unplugged the USB while turned off, it stayed showing the blue charging battery, but it was going down.

Disclaimer: It fell from less than half a meter yesterday, and even though I use a protective cover, I think, no, I'm almost sure this is the cause for this problem. It was charging and the charger I as using was a little bent when I checked it (yep, I've tried different chargers ever since).

Anyone knows what that might be?

Thanks, I was hoping I could do some DIY. But maybe that's for the best.