Sharp Pain

Lucy
I'm 7dpo and yesterday I was cleaning the oven which is a low level oven so crouched down (glamous I know) and suddenly I had a really sharp pain towards the my left pelvis it the niggled a little bit afterwards. 
I am just wondering if anyone else has experienced this or have any ideas what it could be. I have had cramps since ovulation but no other pregnancy signs at all. Other than being tired but I'm always tired with my job 😀
I was wondering if this could have been implantation.
Sprinkling baby dust for all those wannabe mommies.