2 DPO - cramps

Obviously this is NOT a pregnancy symptom as I'm only 2 DPO (that's not my question!  Spare me the judgement, ladies, I'm not a total ditz (ok, maybe a little)).  Today I am experiencing some mild cramping, which seems weird.  I usually do experience mild ovulation pain on the day of O - perhaps this is leftover...?  What else could this be? Just curious and wondering if I should be concerned/how I could treat it.  Thanks :)