I stood on a tiny piece of glass about four weeks ago. I thought I had got it all out but depending on how I stand or move I get a sharp pain like there's something still in there, in the pad of my foot at the front. I keep thinking it's got better, then it comes back. Maybe the piece is shifting in its place? Arghh!! Would a chiropodist cut a foot open? I'm not really sure what they do but I don't think the GP could help. Advice please! TIA