Tummy troubles

I went to bed last night all packed to leave for the agility trial bright and early today. Unfortunately, at 3am and 4am Trapper was up with a very upset tummy. The vet gave us meds in case this should happen so he started them at 4am. Hopefully the meds will settle everything down and we can go play tomorrow. He acts completely normal, but I don't want to push him too hard.....