Your mind finally caught up with what was actually happening and you started to panic a bit. There had to be a way out of this, a way to fix this, a way to wake up from this madness. Or at least a way to get some clothes somehow. Sure there wasn't anyone around right now but that coudln't last and the wind was still a tad cold on your ...skin? Hide? Fur? AAAAAAAAAAAAAAAGH Fix it fixitfixitfixit.....
Wait! you thought, Unicorns tend to have magic don't they? Looking up at your horn, it seemed like a ray of hope. With a wave of your hand you commanded it to... do something...,
But it did nothing. Hmm, well either you don't have magic or have no idea how to use it. You move to lean against a stall, ignoring the squeek of latex. You just needed some time to rest and recover. Time to think this out and figure out should you try to wake up or maybe turn yourself in to a hospital for some treatment of maybe some kind of nervous break down and..., what's that on your hand?
Turning to look at your hand you placed to lean against the stall you see a large bug of some kind, perhaps spider. Of course this realization didn't kick in till later as right now you proceeded to freak out, pull away and think as hard as you could about squishing the bug. You even start picking up a rock to do the deed when a large glowing hand smash the offending bug. That was interesting to say the least.
Some tests later shows that focus or willpower plus a mental image of what you wanted to do seemed to do the effect you wanted. But maybe you shouldn't get too crazy with what you should do next given this is all new to you. What should you try first?