Could there be even more whining in Alec Baldwin’s life soon? Guests at an Amagansett benefit for the Physicians Committee for Responsible Medicine on Saturday were buzzing more about Baldwin’s beautiful bride Hilaria Thomas — and what they thought was a new baby bump — than a stirring speech delivered by the “30 Rock” star. A Hamptons insider who also noticed Thomas wasn’t drinking declared, “She’s not overeating, she’s infanticipating!” But a friend close to the couple told us Thomas isn’t expecting: “These rumors have gone on so long that if they were true, Hilaria would have had a baby already. They just got married, give them some time.” Sources also said Thomas passed up alcohol because she had a cold. A rep for the couple had no comment. Meanwhile, Thomas kept extremely active over the weekend: She taught the benefits of yoga to friends of the Child Mind Institute, including Julia Koch, Jennifer Creel, Holly Peterson, Tania Higgins and Lise Evans, at Amanda Taylor’s Yoga Gives in Southampton.