no implantation bleeding ?

So I got my positive ovulation test on 9th!! So I BD Quite a lot that week.. 
I'm getting little twinges and just had a really painfully twinge for about 2 mins now gone, my CM is still watery/egg White/creamy 
It's not dry which it normally is? 
I've been getting cramping since BD but every wee I'm checking and no spotting ?? 🙄😞
What do you recon ?? 
I did a pregnancy test yesterday and it was negative xx