Dehydration: sunken eyes, a feeling that the "insides" of the body has pulled in; hypovelemic shock? Kidney failure severe muscle wasting - help.

Dehydration. Given the symptoms you describe, the only advice i can give to you is to go to the nearest er as soon as you can. You need to evaluated and have your blood tested. You may also need to be hospitalized and be given fluids through your vein.
Need I've fluids. Get yourself to the er in one big hurry for i've fluids.