Jenn, I am so very sorry for both Cali AND you.  Having a little one who is sick and in pain is very trying.  I will keep you in my prayers.  If I had a suggestion (maybe it has already been offered) I would definately go for a second opinion to a vet who specializes in small breed dogs.   
I am very surprised that your vet didn't find the LP earlier.  One of the first things my vet does (boy I love Dr. Amy) when I take one of the Yorkiekids in for a check-up of any kind is to hug them up and start feeling for lumps and bumps and knee issues.        |