Inhaled a raisin - medical emergency?

I was laying on my back on three couch eating raisins, when I inhaled one. It is not lodged in my throat, it is very much in my lung. This was 3-4 hours ago.

I feel it rattling slightly when I breathe, and I feel some inflammation may be coming on. I would not be surprised if I develop pneumonia.

But is it a medical emergency? If not necessarily but could become one, what should I watch out for as a sign that I may need emergency medical care.