Mildred Richardson you got some sound advice here '''except the rice'''. I'd suggest you start at the beginning and start from scratch. No reason to "kiss the phone goodbye" just yet.
Consider this a supplement only. For now '''stop''' continuing to try to charge, sync or otherwise use your phone. This potentially can make a bad situation worse.
The very first step I would take is to disassemble your phone. Use [[Topic:iPhone 5s|these guides]] to disassemble your phone. Take a careful and close look at all components and connectors. Truly assess the damage. Look for corrosion, evaluate the pins in the connectors etc,. Take a look at all connectors as well as cable ends. Use 90%+ ( I prefer96% available at local hardware stores, pharmacies etc.) isopropyl alcohol and a soft brush (small soft tooth brush or artist paint brush)and clean your parts (logic board etc. not the display) some more. For a proper cleaning, use [guide|5825|this guide.] It was written for a Apple iPhone 3G but it is still pertinent to your phone as well. I can not stress the importance of a good cleaning enough, so do it over and over while replacing the alcohol after each cleaning. Do not use compressed air for the cleaning since that can drive liquid as well as corrosion particles into areas that will cause trouble later on. Also, you do not need to leave it to dry for a day. Isopropyl alcohol in the higher concentration will evaporate quickly and dissipate the water. You can place it in a '''warm''' 180-200 Fahrenheit oven (not hot) for 10 min to help with the evaporation. The importance here is ''' the cleaning'''. If you can get it professionally cleaned, use that opportunity. After you cleaned it properly do not forget to '''replace the battery'''. This is a '''must''' and not an option. It will fail if you do not take care of it now. After that reassemble your phone and then troubleshoot for any residual damage