Hello~I don't think you have anything to worry about. You said you only bled a little, so that would indicate that you did not cut a vein, it is more than likely just a skin cut. I seriously doubt if there is any permanent damage. I would say, however, that you should put some type of over the counter antibiotic cream on the area, such as Neosporin, this will help the cut from any possible infection and help it heal quicker.