at 13 I was able to produce semen
Big time. I was hurling copious loads into Kleenex tissues.
And, yes, a 13-year-old female is a young woman. Biologically speaking, a male and female of this age, with few exceptions, can make a baby.
This FACT might chafe your societal-conditioned moral sensibilities, but it’s truth. Only 100 years ago, the average age of mortality was under 45-ish.
Before a wise guy pipes up with virtue-signaling “pedo!” outrage, no, I am not suggesting, in our current societies, it’s OK to be intimate with and reproduce with an individual of this age. Indeed it is not. Nor is it legal.
But nature and biology cannot he wrong in its sensible determinations of what’s what.
I have three older sisters and I can say that each was well developed at 13. Young as they were. Emotionally immature, though? Of course not.
(In ancient societies, males of 13 were expected to engage in their communities as men.)