An Uneventful Few Months.

Over the next month your stomach started to swell from the life growing inside you. Morning sickness never hit you. Checkups went well. Your sister never got involved with your "Wife". Things were going good.

About halfway through the second you noticed your mother staring at your sister's body, and your sister checking out her bulge in return. Unbeknownst to you they were fucking like rabbits after you went to bed at night.

You pretended not to notice the leering and went on carrying your mother's child until your seventh month of pregnancy when you woke up to a very big surprise.