When you've worked this row if your count is still off, start at the beginning and look at each stitch individually and read the pattern row. The first stitch is knit, does it look like a knit, then a purl that should look like a purl, then your skp dec. Continue on and see if you can identify each stitch on your needle and see if it matches what the pattern says. Learning to read your knitting will be a great help.
Cheating is an option. . . . Cheaters never win and winners never cheat, but smart knitters who want to retain an iota of sanity do, cheerfully. ~~Kory Stamper