3dpo - question

Melissa • Baby #1 born February 24, 2015
Hi all, I am 3 dpo last peak ovulation was 2/21. I am having some achy cramping and bloating that is definitely not normal for me this time of the month. I'm worried that the pain is a problem. This pain is similar to my ovulating pain but that is done according to my opk. Anyone else have this pain? Thank you!