My son is 10 weeks old. He's had a cough and cold for the last 5 days and up until today has just been sneezing and coughing. Since late afternoon he has developed a wheeze when breathing. I know it can sometimes sound like a wheeze when they have some mucus that needs to be dislodged but it doesn't sound like that, it sounds like a proper wheeze. As of now, he isn't struggling for breath and he's feeding as normal. Although this is my 3rd child, I've never had my other two children have wheezing with a cough and cold. Shall I just wait it out for another day or two? Do I need to take him to see a doctor tonight? I'm really not sure what to do, so any advice would be really appreciated. Thank you.