My ds is now in his third week of what has seemed like a really bad cold, he is 10 months old. his appetitte and energy is back but he is still coughing and restless in the nite and has loads of green snot. I had thought it would have cleared up by now , is it normal for a cold to go on like this or could it be an allergy of some sort, wuite worried about it all now.hes main milk source is BM and he enjoys a variety of solids.any advice?experiences would be much appriciated. thanks