Implantation cramping?

We are ttc for #3 and I'm 10-11 dpo today depending on which day I actually ovulated. Took a test this morning & BFN but AF isn't due till next Thursday. I've been having dull cramps all day long mostly on the right, and for the past few hours it feels like the cramps are going down into my thigh. I've never felt anything with implantation so I'm not sure what's going on! Anyone else have cramping like that?