My beagle is 11 and she barely made her walk this morning I had to carry her half way. She seems to wince and Yelp if she moves and her chest and front neck area seem sore every time you touch her, I gave her half an aspirin until I can get her to the vet. She also hops on her right and won't lean on her left leg vets say it's probably just arthritis and put her on metcam. I felt under her neck and there is a lump under her skin. She also has various lumps all over her legs under the skin. What could this be. I don't wanton put her down but don't seem to be getting any answers from the vets