My girl went though this too! I took her in and the worms were bad.. Heres the thing I was in there 2 weeks before(1st needles) and wormed her :? My vet said that I had her on too high of protein food and he gave me pills for worming Just one.(strong one) Well the next day I could believe what was coming out of her! Here im thinking there would be nothing......anyways the vet said sometimes the wormimg meds dont work all that well ? I also switched foods and it was noirmal in 2 days! Never had a problem again.
Glad the pumpkin is working. Remember, though, that the pumpkin is just masking the problem. It is only fixing the symptoms, not the cause. Good luck on finding out what is causing this so you don't have to do pumpkin for the rest of his life.