Does it sound like a train or a herd of horses?

"Train!" Was Peter's emphatic reply.
But, in truth no one's sure we won't deny.
The midwife smiled as I giggled with glee
at this sound that we heard from in my tum-my.

It was quick and healthy and so very alive!
Through this sickness I know I can survive!
There is a child in my tummy, we heard it last night
And it was so exciting, it was so very right.

For now we'll wonder, horse or train?
But, in truth happy we'll remain
For we are blessed already to know
That our baby's heart is strong and will grow.

Note: That pic is not of our baby, but we are moving through week 12!