Cramping 6 DPO

Has anyone had mild cramping (similar to menstrual cramps but more mild) at only 6 DPO? I’ve never felt cramping 8 days before my period starts. If so, did anything come of it? Not symptom spotting, it was very noticeable today off and on.

I use OPK and BBT and I felt ovulation on my left side, so I’m positive its 6 DPO