DId anyone ever have a Barbie who could be pregnant?

My mother thinks I’m freaken nuts, but I remember having a Barbie that had a slit in her back where a plastic baby could be pushed in and her stomach expanded. I don’t remember exactly what her stomach was, it could have been rubber (like her back) or stretchy cloth. I seriously have never seen another one, and my mother doesn’t remember me ever having one. But then again, she doesn’t remember trivial things like that.

By the way, I’m only 19, so it would have been in the 90’s)