I'm no vet by any means but is he house broken? If not train him, and about him throwing up he could have had an upset stomach. I'm not a vet, but if you want a professional, take him to a vet. :)
I have a 3 yr old male mix breed 75 lbs. Last night he threw up on the carpet, peed & pooped in the house for the first time. Now hangs shakes & drools. Seems to be in pain. Generally a house dog, he got out & found a carcass to roll in?
Yeah you need to take him to the vet - those symptoms are serious.