plz help my cat is sick and wont move.

My younger cat, who is almost two is acting out out of the norm. He often times hides under the bed and plays with himself and is very independent. Extremly playful. Very high strong. It isn't uncommon for him to be gone a couple days that you don't see him much from him hiding. He is the sneaky type, therefore we didn't think much when we didn't see himmuch for a couple of days. Now we have realized he hasn't ate, drank or used the bathroom in days. We caught him resting his head and paws inside of the water dish. Moves him away and later caught him laying in the litter. Usually he doesn't like to be held and is very stubborn. I went in this evening and found him under the bed not moving. I gently picked him up and put him on bed and he didnt fight me at all. I noticed he hasn't cleaned himself so I gently cleaned him with warm damp rag as best as I could. I pet him on the head mainly and he just blinks.cue doesn't squirm or anything line he usually does. He just looks weak. I tried to gently drop a couple drops of water to hydrate him amd he liked only one drop. I read about mixing tuna juice half with water so I did a little mixture. I placed near amd at first he sniffed like he was intrested so i got a drop on my fibger and moved it towarda him but then he backed away. The stuff i read online said thats a sign of nasiua. It doesn't seem as if he is in any exterior physical pain. I felt near his ears for heat as a suggestion online said, but there wasn't warmth, indicating prob not a feaver. Our vet opens at 8 so i was going to call in the morning. We dont have money as it is to take him and are in a financial bind since u have an injures foot and am unable to work. Barly goin on my husbands salary. Idk if that calls for emergency service or if there is anything I can do to help him till morning. Idk what to do. I do have one more cat whom is 13 and ia health as can be. Doesn't have any problems and runs around like a kitten. Both are inside cats. There is a Jack russle dog in the house thatgoes in and out whom is really good freinds with my sick cat. Also this morning I had seen him walking weird crossing his two back legs and walking funny. Only way I can describe it as a cross between a zombie and a drunk person.