Hi Christy.
I also have this problem, although it is not happening all the time, thank goodness. I have been told it is from the myositis. Just another "muscle" issue.
I am actually having a dysphagia study being done Thursday March 13/2012 to get it checked. You should keep an eye on it, as it can cause some problems, not including the obvious choking hazard.
I would definately talk to your doctor about it. there are several options available to you, including stretching the throat if necessary.
for now, I would suggest drink alot of fluids, in small sips or with a straw. Also I use fluids like gatoraid or such to "chase" down everything I eat. It's not perfect, but does help.
Keep up the good fight, and God Bless!!
Wayne