So I always heard that implantation takes place about a week after ovulation so 3 dpo I was committed to doing my last "harrah" of stomach crunches - intense style. I noticed my pelvis felt full like I was pregnant already but I ignored it and thought that can't be! It's only 3dpo! I also felt a pinch on my side but kept working out squeezing my abs. The instant I squeezed hard I felt he pinch stop and then became worried that I was indeed implanting and that I had hindered it. Now I feel fullness down below but not like before. I ovulated aug 31-feb 1st ( early morning) and had his happen feb 4. Any insight while I wait it out? I took a preg test and it was negative.