Iphone stuck on charge screen?

My iphone was working ferfect until i went to charge it and noticed it wasn't charging then when i un hooked the charger the battery began to drain super fast like 40% in 15 minutes while not doing anything. It got to 1% but never cut off for about an hour. I then turned it off myself but when i tried to turn it back on it says it needs to be connected to charger but when connected it doesn't charge not it won't cut back on

Hold down the home button and the power button simultaneously for a minute or so.
Wait a few minutes.
Turn it back on.

If that doesn't work, contact Apple care. They should be able to detect any more serious problems.