LO is 7 months old. So yesterday, LO's nose started to run. It's completely clear.... but it's constantly running. He doesn't seem to be bothered by it too bad, but it did interrupt his sleep a little last night. We spent all day Saturday playing outside... so I'm thinking allergies maybe? Is this something I need to call the pediatrician about, or do you think it should just run its course as long as it doesn't get worse? Any thoughts/experience with this? Thanks!