Ok, I'm a beginner so forgive me if this is a dumb question. I started a project today making a lap blanket. I'm knitting on 29" circular needles and the row is 137 sts across. Here's my dilemma...I cast on 137 sts, I knitted across the first row and had 137 sts, then I knitted across the 2nd row and ended up with
138 sts!! I looked back through my work and nothing looks out of place. Here's my question...do I have to tear out that entire row and start over, or is there someway to fix it, like k2 tog on the first st of the 3rd row? How frustrating!!

Thanks for your help!