I will express my own findings. 1. My friends and I never trust medical doctors all the time. They may give you suggestions, but it is up to you to judge. 2. If your baby has the liquid runny nose all the time, there must be some problem. It is impossible for doctor to see anything sine the little noses are stuffed. Then they will always take safe measurement, and don't give you any medicine. 3. There is a professional way to do. You buy a medical eye telescope for nose, then you clean your baby's nose with bulb, then you use the little telescope to see if you can find redness inside. If it is redness, definitely you should treat it. I have never done this but that is an approach. 4. The way I use is to exaggerate the case. I will tell doctor that the baby has runny nose all the time since 10 days ago, no sign of slowing down. Then the baby will get Amox. I would rather give baby antibiotics than let him have a life long problem to deal with. We in most time are very against overtreat kids, but not to a reasonable treatment of runny nose. My kids 70% naturally recover from runny nose, 30% need to be treated.