Ipad not charging

Hello! So my Ipad has not been charging. Yesterday it died and I plugged it in not thinking very much of it, so I left and I came back home and it was still dead! It said it was charging with the red low battery screen, but its been plugged in for two days now. I never dropped my ipadin water, all my usb cords are find because I use them everyday, there is no scratches or dust in my charging port. So I need help plz!