CHICAGO (WLS) -- A pregnant woman said she was attacked and robbed by a group of teenagers while riding a CTA Red Line train Sunday evening.Juatonna Davis, 28, said she hasn't been to work the last couple of days because she's afraid to get back on the train."The whole time in my head I'm just praying that I make it home to my child," said Davis. "And it's scary because it's kids."The attack happened after 6:30 p.m. as Davis, who is four weeks pregnant, and her friend got on a train at the Chicago Red Line stop."One of the girls comes over and says, 'Oh you're here talking to these Bs,'" explained Davis. "'We're talking about robbing them and you're flirting with them in front of us.'"Once the train arrived at the Roosevelt station, the teens tried blocking Davis and her friend from getting off the train."I feel people kicking me, going through my pockets, they attacked us," said Davis. "The whole time my friend was yelling, 'She's pregnant, she's pregnant, don't fight her, she's pregnant!'"The violent encounter came just hours before two men were beaten and robbed by a group of teenagers on the Red Line at State Street.Police said a third violent attack was reported Tuesday night on a Red Line train near the Grand stop. A 22-year-old man was on the train when he was punched in the face and robbed around 7:55 p.m. No one is in custody in that incident, police said.It's not clear if the incidents are related, but Chicago police say they're stepping up patrols near CTA Red Line stops.Over the past year, over 1,300 crimes were reported on the Red Line, a nearly 12 percent increase from last year.