I'm watching the episode now. In the begging she's drinking while they're sitting outside feeding the dogs. Then it shows them inside, she's still drinking. That's when Bentley opens the fridge and says he's going to get a beer. Next scene, Taylor is drinking while Maci is folding laundry. Then she goes out with her friend and has margaritas. These shows are filmed like 6+ months in advance so I believe she may not have been pregnant in these scenes or at least not known yet.