These Three Kids Aren't Mine

Because of blocked fallopian tubes, I spent hundreds of thousands on IVF. I had two daughters, then a son. But when my husband was hospitalized after a car accident and urgently needed blood, I discovered that none of our three children's blood types matched ours.

Furious, I went to the hospital to demand an explanation. They said my husband had agreed to it, and even played me a recording of their conversation at the time.

I was baffled. What was my husband trying to achieve by doing this?