Wondering what this sharp pain could be, is it baby related?

I am 9wks2days with #4 and I am having a sharp pain today that I have never had before. It is located on my right side. If you follow your armpit down to just below your ribs and just above your waist that's where it is. This has been an intermittent pain all day. It started when I was sitting down eatting a sub sandwhich, my craving. When I sit/lay down for long periods it goes away for awhile and starts again when I stand for awhile. Is it something I should be worried about.