Were you qt'ed properly? Try to stay calm and not scratch yourself too much.
I dont really have a QT Tank. Everything was fine until I went to Pacific Aquarium in Delancy and picked up a Fiji Wrasse and 3 Bangaii Cardinal and thats when everything went downhill. I started losing Bangaii Cardinal one by one and i thought it was because it they werent eating. Now i get home after work and im seeing massive spots all over my 5 fishes. SMH
For the future, you can use a 5 gallon bucket as a qt for a few small fish if you really don't have the space for a dedicated qt tank. Well now you're forced to set one up for all of them, sorry. Not the end of the world. Lots of good tutorials out there.
I would ride it out dip food in garlic and make sure fish are eating and in my opinion any other fish you put in there will probably get bullied by six line wrasse, I think theree aggressive and when I had one I couldn't put anything in tank he's probably stressed out other fish when you put them in.