Hi Doctor, I have an area of thick skin between two of my toes which has a black spot in the centre. As it press against my small toe it causes pain and discomfort during walking. Secondly, I accidentally dropped a metal bar on the top of my left foot about 2 weeks ago. The area bruised temporarily and the skin broke but it did not bleed. I now have developed a very prominent bump which appears to be fluid filled which disappears but then returns. There is no pain associated with it. I would appreciate some advice. Thank you.