Dull cramping, pulling feeling

Hi I'm 9dpo and 5days baf... I'm been getting a dull cramping in my left lower abdomen and a pulling feeling.. with my periods I always experience a really sharp cramp a day b4 af and throught my cycle. I since yday 1st Feb I've been getting these little dull cramps... no spotting at all... is it implantation or do you think it af gearing up