Cat sick...need advice please!

I really need advice please, if anyone cam help. I have two cats, both indoor, although one has been going outside a few times recently. That cat, Prince, has gotten sick. I dont believe its due to one of his outdoor trips because hes been inside for the last few days.
Yesterday i noticed him sneezing and realized he hadnt came near me all day. Usually hes a cuddler. Then last night he had a lot of white spittle outside of his mouth. Im pretty sure he ate last night. A dew minutes ago i discovered he went over by his food bowls and pooped. Thats very odd, he always goes in litterbox which is on another floor. While i cleaned it u he never moved, just layed right by there. The poop was solid not diarrhea. He finally moved and has just been laying on steps for a while. He wont interact with me and seems very lethargic. Last night when i noticed the white spittle he was still purring when i pet h. Now he just doesnt want anythi g to do with me. Very odd behavior for him. I know nothing about cats. These are my first cats and i dont know if i should be upset or not. I have no money to take him to vet. Idk what to do. Please help!!!

I'm sorry to hear about your baby.

I'm having issues with my girl cat.  She gets constipated often and has a history of Crystals in the urine.  However, when she sneezes and it's not often, it's usually followed by urinary issues.

Is your cat urinating, and is it normal.  Sometimes if they have crystals or problems urinating they push which could be why the poop came out.

How is Prince with drinking water, food intake etc.

If he is very sluggish I would suggest seeing the vet asap.

Please keep me updated.  I'll be thinking of you both.

@jayjays   I think you should take your cat to the Vet. Anytime a cat starts hiding from you and displaying strange behavior, it means they are sick. Cats try to hide their pain. 

I would definitely take him to even an ER vet, if your local one is not available today..The spittle would be enough to get me worried...

Good Luck!!

@2Cats4everLoved  How are you? thinking about you.. how is your baby doing? ((hugs)))