I am reaching the end of my tether with my 17 month old son who keeps hitting me. It seems sometimes out of temper/frustration and sometimes I think out of over-excitement. Sometimes I can't see any reason at all. Each time he does it I tell him "No, you don't hit Mummy" but either he doesn't understand or he just ignores my telling him off. I don't know what to do to be honest as telling him off doesn't work. Is he too young for time outs and naughty step type discipline? He also throws things a lot and that is pretty frustrating too. Whether it's food or toys etc, and the same thing again. I tell him "No" but it doesn't stop him. Has anyone got any advice?