I nos feel good

Hi all, I is not feeling very well today. Mommy had to take me back to the vet so she could look at my leg. My right back leg is very stiff and I has a large mass on the inside of the leg about the size of a peach. The vet took out some fluid and said it was all fluid and that is good means not a growth and it showed signs of allergic reaction to who knows what. Mom was told to keep an eye on me and to give me Benadryl and aspirin and to call if it gets worse.