Are you knitting on the wrong side of the circle? That typically happens when you knit on the side of your needles away from you. If you think of the circle as a cup, you should be knitting on the side you'd drink from. You can flip it inside out now, and start from where you are in the right way....or wait till you're done. I don't think it will mess up the stripes, but you may have to weave in end carefully, or pull them through to the other side when you're done.
I'm Knittermom9 on Ravelry