Blocked Tear Duct

Kelly

I'm pretty sure my baby has a blocked tear duct. I just noticed it Friday. It doesn't seem to bother him too much, but he did have a slight temperature, 100.1, yesterday and today it was matted shut when he woke up from his nap. I've been wiping it with breast milk. I'm just not sure at what point should I call the doctor? Besides the slightly yellow goo it looks fine. Thoughts?