Hi my fertile days are supposed to be between the 10th and the 16th according to Glow, I don't use OPKs I just go off my CM.

We had sex on the 10th, and also on the 13th and will be also doing the deed tonight when my SO has finished work.

Today I woke with cramps, and i still have them now..it's been on and off all day..could this be implantation or ovulation cramps? I ask as I never get O cramps, ever! I noticed I had light watery fertile CM around the 10th throughout until maybe the 13th..yesterday it was more watery white CM and today not so much..thoughts please? I know implantation doesn't usually happen this fast, but has anyone experienced this?