Is Jenelle Evans Pregnant Again?!

Jenelle Evans just got engaged to Gary Head, and already, rumors are flying that the Teen Mom terror may expecting a second child she has no interest in.

The Oak Island, N.C., product has "put on 20 lbs. recently," according to a source because she is pregnant with another baby ... supposedly. Allegedly.

Hey, at least she's in a "stable" relationship at this point. Her engagement to Gary Head has already lasted two whole weeks, beating analyst expectations.

Is she actually pregnant though? We doubt it. It's just hearsay.

Still, "she's so irresponsible, it wouldn't surprise me if she's pregnant," says an insider. "But for her to want another child would be crazy, because it doesn't seem to bother her at all that she doesn't have custody of [2-year-old son] Jace."

Who said anything about wanting one?

Anyway, baby or not, Gary is stoked he gets to see Jenelle Evans nude for the rest of his life, or at least until their engagement ends this summer.

"She just broke up with Kieffer [Delp] a week before the engagement and immediately got back with Gary," the insider explains. "Gary is thrilled, because he had asked her to marry him before and she said no. I guess she changed her mind."

Guess so.