My doctor says that having those symptoms in babies, it is not from teething. She said that those are myths! and that probably a little fever would be a small symptom of teething. ONLY.
I would say it is an allergic reaction to something. Is your place free of dust? maybe flowers? sprays? perfumes? whatever that can cause allergy, just block it.
Our son was like that for a while, but the reason what the change of environment when he started the daycare. He got those symptoms and then he got a fever and then everything was over.
Dont be scared, probably is nothing but something temporary!