They still love you James, don't worry
Its a natural reaction - they will forget about it as soon as a few days have passed. We used to have that when we took our Cavalier King Charles Spaniels to the vets for injections, they would not go into the car for a few days, as the trip to the vets was still fresh in their mind.
We now take our Rottweiler pup to the vets every month to be weighed, so that when he needs injections he will be used to the trip and have trust in the vet - it was her suggestion as she has a lot of experience with big dogs. Goats and sheep are very timid animals, but will forgive and forget - unlike humans
Julie