Help! I got home today after about 2 hours and my 11 week old puppy was fine! We played, he used the washroom as normal, we went for a 5 minute walk down the street, and BOOM! he starts acting like he is choking and nothing comes up. Now for the past couple of hours he starts doing the choking thing about every 10 minutes, is drooling uncontrollably, is shaking and has some dirrahea! I don't know what is wrong with him, does this sound familar to anyone??? PLEASE HELP!!!