A month ago, I adopted a White's tree frog from someone who was moving out of the country. He's been eating ok. Not great, just ok. I figured it was just him getting used to a new place and a new owner. I noticed a lump on his back about 2 weeks ago. I called her and she said not to worry about it, that every so often he would get a couple bumps and she would either take him to the vet so the bad ones could be drained or she gave him oral antibiotic drops and the bumps went away after a few days. So I decided to just keep an eye on it. Tonight when I took him out, the bump had a little white spot on top. Not to sound gross... but it kinda looked like a huge whitehead that was ready to pop. So I kinda pressed around it a little bit and it didn't seem to bother him. I went about my tank cleaning routine with him on my shoulder, lah-ti-dah, and then I pick him up to put him back in his tank and theres a long thin string of whitish-grey stuff running from the center of the hole to almost all the way down to his butt. I thought it was pus so I tried to wipe it and he cringed. It is a worm. I poked at it and it slowly recoiled. I took some scissors and cut it above the hole. It's probably 1.5 inches long. And the remaining little piece slowly withdrew into the hole. My frog didn't see to flinch or anything when I cut the worm, but he flinched big time when I lightly tugged on it to see how much would come out.
So... What is it?! What do I do??? The worm is thin, skinny, flat and white. I don't see segments but that doesn't mean there aren't any. Oh, and he refused to eat tonight.

