He wasn't right when I got to the yard a couple of hours ago, was eating his hay slowly. I watched him and then he went and layed down, got up, layed down again. Normal poos last night but he hadn't drunk. Watched him for a bit longer and just standing quietly or laying down. Rang vet for advice and they have said monitor. Got him in and walked him round the school where he was passing some gas. He doesn't look particularly gassy. Not trying to roll in the school and not rolling just laying down in field. Put him in a box where he went to lay down then changed his mind. He's done a poo and a wee since I got here this morning. He's now standing with his head quietly over the stable door. Back to having some interest in hay again. I'm going to have to go to work soon but just waiting for the yard owner to get here. Vet on standby if needed. Fingers crossed everyone please