You should probably ask you're doctor about it. Ultrasounds are pretty accurate. Good luck
"He showed it to her" is much better.
Yes, "showed" is the past tense of the verb "show." It is used to indicate that something was displayed or presented in the past.
You Showed Me was created in 1964.
I showed him to his room.
Showed workers that organized labor was powerful.
He showed that DNA is a Transforming factor.
They showed that business had rights.
it showed that they have rights.
The past tense is showed.
Kayce R.F showed the greatest player ever how to play. i showed him every thing
The teacher showed her class how to read a book. The farmer showed his best bull at the local show.
Nicolaus Copernicus showed that our universe is heliocentric.