ovulation help!!

Today is CD 13.  Glow says my peak day is tomorrow.  Today I'm having ALOT of ewcm and some dull cramping (period like) in the middle.     I know it would be easier to tell If I took an opk test but I cannot for the life of me remember to take one! Or put some in my purse so I have them at work.   But anyways could the cramping in the middle be ovulation? Or does it have to be on the sides?  I've never really noticed it before to know how it feels.