He ended up with...

 I came to pick him up and he just squirmed and kicked and pushed just to get out of the vet's arms and run to me and his nub went CRAZY! I soon figured that he ended up with urinary tract infection or whatever you call it and he had crystals in his bladder and that is what caused him to urinate blood and sometimes he even had trouble "going". And the worst part is the diet. His diet only allows a specific dog food that is for that infection and carrots :( That means NO PEANUT BUTTER, apples, bananas, yogurt, dog treats, OATMEAL(Peanut goes so crazy for it), rawhide bones, and just anything but his dog food and carrots. Poor 'nut. In a month, I am going to take a trip to the vet and I'll see if the illness is over. Hope it's gone soon!!!!!!