So what shotdown35 said, update introduces an abortion clinic. Basically after finishing the lab (from the previous update) go visit Fio (the Succubus looking alien for those who don't know) and you'll have a small cutscene. Go to the Slums and there'll be a new area there, that's the clinic. Get raped by the monsters at the lab to get pregnant (from a rough google translate the pregnancy is only half-implemented, so only abortions are available, no actual birthing or pregnant belly yet, correct me if I'm wrong. Also so far only these monsters seem to get Aya pregnant, though I've only tried with the lab monsters and the cockroaches).
Entering the clinic introduces us to Dr. Ryon. 1st option is a pregnancy test. If Aya is indeed pregnant the second option will activate the abortion scene where he uses a bug to get rid of your pregnancy. If you go through the abortion with less than 3000 G (money) you will activate a bonus scene where Aya is unable to pay the bill so the doctor has a local rape her. No idea what the 3rd option is. Also it seems to not be a 100% chance of Aya getting pregnant. It works most of the time (get raped then get out of the lab, no defeat screen required) but not all the time.