IPhone 4S says its charging but its not?

So this morning, I woke up and my phone was at 25%, but it was charging. I unplugged it and plugged it back in. It went up to about 30%. My phone has been on the charger all day and once it hits about 38%, the numbers only decrease even when the phone is on the charger. I cleaned out the charging slot of my phone, used different chargers, took out the sim card and even did the old fashioned "Turn off and on". Now the phone is dead and it is plugged into the charger and it says it is charging. WHAT DO I DO? I went to the apple store today and there isn't an appointment opening for the next 3 days. This has NEVER happened to me before.

Maybe the battery is broken, be careful, when charging the iphone, do not use it at the same time, that is very dangerous, check if the battery touched water or not

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