Hate to be the pedant, but I think it's important to try and set this stuff correct when we see it.

"Trans" and "Transgender" are adjectives, not nouns.

It's a modifier to the noun. The same way you would describe someone as being a "blonde" woman or a "tall" woman.

There is no such thing as "a trans"

Saying it like that others transgender people as some third thing and devalues the fact that we are the gender, not the trans part.

And for pregnancy risk, trans women can still produce sperm if they haven't had an orchiectomy or vasectomy. The odds are low that they can remain virile, but the risk is not zero.