I was moving my puppies to clean the box and 1 of them fell from my arms.After he fell he starting cry and pee I grab him immediately and check if he was responding .He was moving and walking and I put him with the mother to check if I was eating. Everything look normal, the mother was very concern about the puppy but now the puppy is sleeping with the other 2 brothers. Do you think that I have to bring him to the vet or just check on him?