My DS is 7 weeks old and has had a cold for about a week now, we took him to the doctor who said he cant give him any medication due to his age. He seems to be getting better but the paranoid first time mum in me is worried, he brought up a little mucus this morning, which had a tiny streak of blood in it.. now i know this happens to me when i have a cold and blow my nose but is it normal for a baby?? He seems fine otherwise still smiling and kicking his legs.. 