Thanks everyone. I go to the same pet hospital, but the vet we saw yesterday was new, I really like the other doctors we have seen and I guess we'll take him back and ask to not see the same doctor again.

He said it may be luxating patella, but he messed around with Henry's knee joint a lot and said if that were an issue he would be able to pop it in and out with his hands and that Henry's joint felt very stable.

Henry woke up crying again in the middle of the night So we'll probably take him back in. My poor little baby boy.