Here is the full list of all 12 Hazumi and the Pregnation achievements.
Reached the end of the game.
Bought your room.
Experienced 15 pregnancies. Time to go shopping!
Got pregnant with twins.
Started a job.
Got pregnant with triplets or more.
Gave birth.
Found out you're pregnant.
Sperm met egg.
Have a child growing in your belly.
Started your new life.
Collected 300,000 mL of breast milk.