I think my cat is sick =(

She lost weight to where her spin and ribs are visible despite eating a good amount. She was always on the fatter side. Her weight loss was all so sudden.

She lacks any energy to move from her bed, and when she moves, she moves very slowly. Her hind legs are causing her pain. She can't put weight on them without it causing her pain.

She's had bad hind legs for a while, but not like this. If you press that area, you can feel muscles twitching. She always like being tapped in that area as it gives her a sensation and she purrs loudly.

I made a comfy bed for her and put water next to her bed, and she's gulping it constantly.

She lacks any energy to meow.

All of this I talk about just happened so suddenly in one sweep 2 days ago.

Her eyes are cloudy and it seems like she doesn't remember where she is sometimes.

What's wrong with her?

She's 17 by the way.

She still purrs though, if I pet her. =( =(

Please say a prayer for her even if you're not religious, please please please! Her name is Josie; say a prayer please!