You burst out from under the bush and charge into the forest after the ponies, crashing through the underbrush as fast as you can manage.
"Wait! Wait! I'm sorry! You're right, I should go to the hospital!"
After a moment you see five of the talking ponies race back out of the shadows of the forest to where you're standing. As they gather around you, you stand there, out of breath and wobbling back and forth on your new horse legs.
"Well, it's good to see that you've come to your senses," Twilight says, "but I really wish you hadn't run off in the first place."
"The poor thing is probably just confused from the fall. Don't be too hard on him," Rarity says and then flashes you a smile.
"Well, we should probably get him to the hospital. You do seem to be able to walk okay now," Twilight says as she looks you over, "Do you think you can make it to the hospital?"
"I think so," you say.
You walk with them for a little over an hour and eventually arrive at a small hospital in the center of a town that looks remarkably human, except for the fact that everyone in it is a technicolor, talking, and in several instances clothes wearing, pony.
"If they say I'm fine, then will you guys believe that I fell out of a tunnel?" you ask the ponies.
"I already do!" Pinkie Pie says cheerily.
The rest of the ponies look at each other for a moment before Twilight speaks up.
"We'll be willing to give it some consideration, that is if the doctors say you don't have a head injury," she says.
"It's true though. I don't belong here. I'm-"
"You're really a hairless ape from another world where you use machines instead of magic and you fell through a tunnel into our world and forgot your name! Right?"
"Exac-" you start to agree with pink, happy that someone seems to have an idea of what's going on.
"Oh, Pinkie Pie, really! Don't bother the poor thing. He's obviously had a hard enough time of it as it is today without all of your... special kind of reasoning."
"Okie dokie Loki."
"But if the doctors say I'm okay, you guys will try to help me? Right?" you ask them.
"We Pinkie Promise. Right girls?" Pinkie says while looking excitedly at her friends, "Right?"
After a moment the other five sigh almost simultaneously and say, "Yes, we Pinkie Promise."
"And nobody, but nobody, breaks a Pinkie Promise, so you've got nothing to worry about!" Pinkie says and smiles.
Choose your pony adventure:
Go into the hospital peacefully
Tell them that you feel fine now and try to get away