Only the OB-GYN knows for sure as <strong>JEN ANISTON</strong> switches it up south of the border.
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Splash News Online

JENNIFER ANISTON might have a bun in the oven – or just an extra burrito in her belly!
The 43-year-old beauty ditched her rigorous diet and exercise routines during a Mexican vacation with fiancé Justin Theroux and chowed down to her heart’s content, say sources.
After indulging in yummy enchiladas and frosty margaritas during the day and high-fat guacamole and chips at night, the former “Friends” star tried to cover up her paunchy midsection with an oversize T-shirt.
Now friends are wondering whether Jen’s long-time baby dream has come true, or whether she simply packed on a few extra pounds during her 10-day getaway.
“Jen really let herself go while she was in Mexico,” disclosed an insider.