I'm also 6DPO and I feeeeeel your frustration...trying SO hard not to read into every insipid detail! It actually frustrates me so very much to the point where I get angry with myself lol - then again...today I find myself just being angry...then weepy...then oh so grateful for everything...then frustrated...lol I feel like an emotional yo-yo...oh the joys of TTC!
As far as the cramping goes, today, at 6DPO is the day that if the embryo (blastocyst) had been successfully fertilized it would have moved down your ovary and begin to burrow inot your uterine lining, this can cause spotting and mild cramps which may either be similar to AF cramps (just dull and mild), or short little bursts, or pulling and pulling, almost like twinges (muscle spasms but in your uterus)...if you don't feel it, it doesn't mean your not experiencing implantation
When are you going to test? I'm soooo trying not to test like NOW...lol, I was a bit trigger happy and tested on 4DPO (such a foolish thing to do, I knoooow)