Q. My puppy is 4month old has a swollen belly and has been sick a few time in past hour and seems very shakey but hasnt ate anything different
A. Continued vomiting and lethargy together are very concerning and can lead to dehydration and electrolyte imbalance as well as low blood sugar. He might have eaten something that either disagreed with him or something that has gotten stuck somewhere in his gastrointestinal tract. He could be sore from a hidden injury you are unaware of, he could have been exposed to some sort of toxin or irritant in his environment or this could be early signs of another condition or disease process. I recommend getting him seen by your vet as soon as possible or if his condition worsens, taking him to an emergency clinic tonight.