Thanks for the response and sorry about the quality of the pics, i couldnt move to see the screeb it hurt that much at the time

Yes the graft was a hamstring graft

I was told by the reg it is the incision for the screw fixing, however i had an x-ray which apparantly showed the screw has not moved

I noticed a little pain then some swelling then the pain and swelling came together

Both myself and the reg had ruled out an infection, as the problem came on so fast and there has been no weeping

I have been to see my GP who's first impression ws it may be a haemotoma, but i still fear the worse that the graft may have snapped