KANSAS CITY, Mo. — When the shots rang out, people inside Union Station took off running. Chariah Gordon, girlfriend of Chiefs wide receiver Mecole Hardman Jr., got swept along. She is pregnant with the couple’s second child. “Please don’t fall, please don’t fall,” she told herself as people pushed and shoved against her. Her other immediate worry: “Where’s my man?” Late Wednesday night, Gordon shared details of the shooting at the Chiefs’ Super Bowl rally at Union Station that injured 23 people and killed a woman During an Instagram live, fans said they had worried about the couple. She was j…