Peeping does help to encourage hatching, I used to play a YouTube recording of chicks hatching by the incubator for a few seconds and turn it off to see if I could hear any peeps responding from the incubator. It's a fun way to hear if you have internal pips without opening the incubator and disturbing the humidity. I wouldn't start worrying yet, it's still early. Did you count the day you set the eggs as day zero? Because hatch day should technically be the same day of the week that the eggs were set. So if today is hatch day, then you would have set them on Tuesday, February 4th.