I Have An Irritation In My Throat And A Lump

I have an irritation in my throat and a lump like feeling when I swallow. This has occurred several days after I had a vomiting bug. I Can't see anything when I look in the mirror and I have no problem eating but it is annoying especially first thing in the morning. It eases during the day a little but flares up again later on.What could it be and when will it go away?