I'm looking for the title and author of a short story or novelette that I read quite some time ago.
The main characters are two young women. One is taking correspondence courses, and is constantly being berated by the other one for hoping to rise above her station. They go out to pick up young men, to sleep with them, to get pregnant.
It's not a normal sort of pregnancy, though. The men have some sort of 'coded semen' which grow something other than a child in the woman's womb. It ends up being a product of some kind, which earns the woman money when it is 'born'. The one woman is very careful about who she chooses, as she can only do this so many times. The other... isn't so careful.
At the end, the careful, studious woman achieves what she has been working for - a letter from a government organisation that permits her to become the mother to a human being.
Thank you for reading my question. I've been looking for this story for years, now.