at least you have a viable option of being implantation sign-- do you BBT?
I am only 4DPO and have been cramping about 3 days, on the left lower abdominal side, back ache and sometime feel pulling sensation and twinges.. way to early for me to claim implantation but I have searched the web and have seen mixed stories, mostly take it as a very good sign
especially if you have other signs, like BB, nausea and other things..in the upcoming days.. I know it doesn't help much, but that's the only way to know for sure. Other signs may or may not be (depending on the pregnancy) coming up as a result of progesterone hormone increasing which is due after impl.
I am very anxious to see how the rest of the days are going to be for me since I really hope I don't have to deal with an ovarian cyst while TTC. Than again, that's me, you are right on time for implantation so keep your hopes high and look out for any signs of light spotting.