Yesterday I had a lesson on a horse that I've never rode before. The RI had be trotting over bigger jumps than I've done before. I went over the first jump okay-ish (almost lost my stirrup). Then I went for the nrxt jump (this was the big one) and the horse was really going for it I could hardly keep him in trot and he over jumped it and I lost my stirrup and sloped off sideways and landed on my back/neck. The horse then almost stood on my head. He then canted off to the other horse in the lesson. The owner then said after the lesson that the RI should not have had me jumping in my first lesson on the new horse. And I think I have whiplash from the fall cuz I've got s really sore neck.