AmyMay
Situation normal
I’ve not read all replies and I feel I’m missing a big chunk of this story. How or what right does any vet (assuming your not well known to them as it’s a new horse) have to say a horse is not right for you after giving vaccinations? The back issue could be next to nothing (or it could be big) but until you investigate you don’t know that.
Do you like the horse? Did you ride and see it ridden before buying?
It almost sounds a little like the vets comments have damaged your confidence in the horse?
Poor horse!
Catch up ??