Is it normal to be extremely nauseous from gabapentin?

I have chronic pancreatitis and have been using this since December 2012 for pain relief with no side effects from this medication. I have received my refill on 4/16 and have been nauseous to the point of running to the bathroom waiting to vomit. I don't know if I should call the pharamacy in case of a bad batch or my doctor. Any help would be greatly appreciated.