Hi just adopted my piggie Cosmo only 2 days ago. Since he got home he’s been scratching and biting himself. I thought it was mites so I treated with ivermectin, small improvement but still itching. Now, he’s given out discharge through his nose, refusing to eat much, very lethargic and laying down all day. He’s also been shaking and twitching, his teeth chattering too. He’s got hair loss as well, very worried and can’t afford a vet bill right now. Is this a URI?