Good/bad news

I got a call from the Vet today.  Time for a round of good news...bad news...

frustration

Just found out that our not even two year old puppy might have heartworms. While we are going to get a second test to confirm, I am aleaft kind of freaking out. What really gets me is that we've done everything we were supposed to do: we stared him on heartworm medicine as soon as we got him. Total suck.