I’ve finished this section and just about to do the 3rd inc row on this section…

But for some reason I’m on the purl side. What am I doing wrong?

Thanks in advance

Difficult to tell. The pattern is reverse stockinette stitch with the odd rows as the RS. Count rows since the last dec row and see if you have 5 rows. The 3rd dec row should be a WS row, a knit row.
You can add another row or take out a row, depending on the row count.
What are you making?

Thank you! I’m making the snowdog from the womens weekly knitting pattern 2012

I’d add another row so that you can work the 3rd increase row on a knit row.