Hearing sounds where they shouldn't be? Am I hallucinating?

I woke up this morning with a weird kind of headache I've never felt before. I can only describe it feeling like a "line" arching from the top left of my head down the bottom left. A couple hours later, I had both my iPhone and iPad in my lap, my boyfriend facetimed me and both devices started ringing. I silenced both and heard a ring on the sofa on my left. It sounded muffled like it was under the cushions. I was very confused as both devices are in my lap and silenced, but decided to get up and look anyway. Nothing of course, so I turned the sound back on my iPad, and heard 2 rings. So my devices were definitely silenced. Silenced it again and still I hear this ring on my left. Then I missed the call and the ring stopped. My boyfriend immediately called again, and again I hear this ring. My devices are still on silent. What is wrong with my brain?

Magnesium and zinc deficiency is rather prevalent. Zinc deficiency is more strongly correlated with tinnitus, whereas magnesium deficiency is more correlated with delirium.
http://www.ncbi.nlm.nih.gov/.../16542786/