Why is my phone not charging?

[Windows Central Question]

Hi, I have the nokia lumia 635 and I had for a couple of months now and lately, I've been wanting to charge it with the nokia charger at night but when I woke up in the morning it was still at the same percentage and I'm freaking out because now I cant use the original charger which was a good charger because it charges fast and I have to use an apple charger with a computer usb and it takes very long to charge but it charges to 100% sometimes. Please answer asap, thanks