I have a lump behind my left ear, and another in my mouth by my left tonsil. Could it be cancer?

I found a small (1cm), hard, painless, and immobile lump behind my left ear last week (by my auricular lymph node). It hasn't changed size since I found it, but I found a lump in my throat (by my left tonsil) 2 days ago. It is slightly smaller than the one by my ear, flesh-colored, and has a small indent in the middle (see picture). It doesn't hurt, but I feel it if I swallow particularly hard. I don't feel ill, but my appetite has shrunk and I've lost a few pounds lately. Could it be cancer?