My little boy has bumped his head into my teeth when I was holding him and he has a red mark with a little bump. He seems fine in himself and has had a full bottle and played and now gone down for a nap. My boyfriend says I'm over reacting but I'm so worried that it's hurt him and caused something serious. He is only 3 and half months. Should I take him to be checked over or am I over reacting? I do suffer with excessive worrying