Well, first is there a possibility that you could relize what a real contractions is? especially if this is your first baby and you don't really know what to expect.
Second, what does it feel like when your water breaks?
When you water breaks it might feel like you peed your pants a little or it could be a gush. As for contractions you would know, I did not actually have any what so ever until I was started on pitocin but once I started having then there was not mistaking. They feel like bad cramps when you have to go to the bathroom.
I am also wondering about the water breaking...I find that I am always leaking something and I am not sure if it is urine or my water broke...as for the contractions...you stomach will get REALLy hard...you will know!