My 7week old son is showing his first signs he has a cold and I’m freaking out!! My daughter who is 3 and always seems to get sick fast has had a cold going on 3 days now and I’ve tried to do my best by not letting her touch baby but she has an awful cough with a lot of mucus, started with a runny nose. Anyway I know the basic things to do like suction babies nose and use a humidifier..also elevate babies head while asleep but I’m kind of nervous like since he’s so small if I should take him to the dr. Or ER