Can you look at the pattern stitches from the knit row, name the stitches and tell which ones appear to be linked? You have a knit stitch flanked by yarn overs in the paattern. I'm wondering if the linked sts involve the yarn overs and if perhaps you're pulling the yarn over too tightly? If that's the case, pull the link down and purl into the yarn over and try not to do them so tightly.
I assume that after 10 rows, you're stitch number is coming out correctly?