DS2 had chronic ear infections that resulted in tubes 4 months ago. Currently, he has his first ear infection since. The discharge, though, has some blood in it. He never had a discharge before the tubes, but a pedi told me to expect it post-tubes (a discharge that is, no mention of blood). When we took him to urgent care for the diagnosis yesterday, the blood wasn't there yet. It appeared today.

Is this ok? Why do these things ALWAYS happen afterhours?