Cramps before implantation?

I'm only 6dpo but ever since ovulation I've had mild cramps. When o finished it was 2 weeks before af was due, I never get cramps until a few days before af. But now I'm due in a week and these cramps are even more mild and now I have some pinching, sharp pains but not painful. I just wanted to know if it was possible to have cramps even before implantation if conceived?