Lisa Guerrero says her one season as a reporter for "Monday Night Football" was absolute hell ... revealing things got so bad at the gig, she actually suffered a miscarriage while on the sidelines during a game.
The 58-year-old, who took over the 'MNF' role from Melissa Stark in the 2003 NFL season, explained the horrifying situation in her new book, Warrior: My Path to Being Brave.
She said from the day she first got the job, she faced unfair ridicule and criticism from males in the sports world .