Both males mount you several times over the next two days - but then you find that you are not interested anymore and kick at them when they approach. As intense and pleasurable as the sex was, you just don't feel like entertaining them.
That seems weird to you, but you accept it along with everything else about your life as a plow horse. The days pass quickly. You finish one field, then another. The two males stop bothering you and end up being just freinds and herd mates who join the evening huddle to socialize and groom each other.
Your simple equine existance becomes so normal that it is actually a surprise when the barber shows up again one day. You remember him, of course, but he's almost like someone you knew years ago, not just a few weeks.
"So, are you ready to be human again? Or have you decided to stay a horse?" He grins and pats your neck, then frowns. "Uh-oh. Your belly looks awfully round."
The boy comes out to greet the barber, who asks him if you are pregnant. You are shocked to hear the boy say yes - it never occurred to you, even though you had been mounted so many times.
The barber chuckles. "Well, that's your decision. Can't make you human again when you have a foal forming. Sorry to waste a trip out here, though." He looks at the boy. "What about you? Want to try life at the other end of the plow? Or maybe get a long free ride in her belly as a twin to her foal? Or I can do some light trim work and make you younger, older, bigger, smarter. Whatever. Since I'm out here, I'd like to do something."