Implantation Cramps? Or is there such a thing?

Most of the implantation cramping I've heard described (including my own) was a period like cramping. Just a general low ache, not anything sharp. Some described feeling a fluttering type of feel. Implantation cramping is actually the uterus stretching in preparation for baby growth. It starts immediately expanding upon receiving the HCG signal from the embryo. Some women don't feel anything so early. Everyone has a different threshold of pain and discomfort so it's always hard to say what it definitely is or isn't.