I have a 3 week old who so far has been fine but tonight has been crying constantly with short periods of calm when she doesn't settle. She also keeps going to the loo, pooping, although they seem normal and is also hungry guzzling food. Can anyone help? Does this look like colic? We have tried Infacol but no change tonight. Been going on for 5 hours and she has had 3 big feeds and 3 large poops in that time