Not at all a stretch.
Today on NG they also showed some of the items on Melindas blog. In early July she said something like. "I'm sick today. Bad news". And in subsequent blogs she complained about being sick in the morning and lots of times she complained about having stomach aches and feeling very sick. So maybe she was pregnant. This adds some more to my theory that there was another guy in the picture.
They (on NG) were talking about whether or not an autopsy would show if she was pregnant. And they speculated if the sonogram picture that was thrown in the dumpster was of Trenton or if it could've been a current pregnancy.
Hasn't Melinda been buried already?