Why does it feel like there's something in my throat?

Two days ago, after I ate dinner, I felt a feeling in my throat, as if something was there. I still have the feeling in my throat right now, yet I don't know why. My throat isn't sore, and I don't have a cold (just a bit of a runny nose sometimes, probably because it's been snowy and cold where I live). Why does my throat feel like there's something stuck in it?