Credit: Jae Donnelly/ Photo: Leah Messer Smoking on January 12, 2012

Looks like Leah Messer is having a stressful week (perhaps having a Friday the 13th jinxed her).

Just last weekend, she hit a deer with her car. And in some newly released photos, she's seen getting into her dinged-up car, having a serious conversation with fiance Jeremy Calvert ... and smoking!

Uh oh ... Leah is reportedly pregnant (though NOT having twins), and every good doctor would advise a pregnant woman not to smoke in that state.

So, could Leah not be pregnant after all? Or did she just give in to the temptation of having one last cigarette during a stressful week?

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