Travis Kelce kept telling himself not to “drop the baby” when he carried his girlfriend Taylor Swift on stage during one of her ‘Eras Tour’ shows. The NFL player, 34, made a surprise appearance in front of her fans at Wembley Stadium, London, dressed in a tuxedo as part of a sketch in between songs that saw Taylor, 34, pretend to swoon before he lifted her to a couch. He has now said on his ‘New Heights’ podcast about his nerves during the show: “The one thing I told myself is, ‘Do not drop the baby. Do not drop Taylor on your way over this damn couch’. “The golden rule was do not drop Taylor,…