i felt it before af came several times. i always thought it was a pregnancy symptom. but the cycle i actually fell pregnant, i wasnt trying hard, and so i didnt think i was pregnant although my symptoms were the opposite of my normal pms symptoms. when the baby implanted at 6 dpo, it felt like nuzzling down(too soft to be considered a cramp though!), and i mean LOW down(around the ovary area but much lower). it was at 9 am sharp at 6 dpo. then an exact hour later, i felt the same nuzzling sensation but much higher. it was not near my belly button at all and it felt internal. i did not have implantation spotting or bleeding either. at 8 dpo i got my bfp although i really didnt think i was pregnant! i did it because my boyfriend just "knew" and told me he thinks i am. i thought well ill take a test (although i thought it was too early to even test at 8dpo) just to see if hes right. surprise!