if i were you i would see my dr just to make sure you didn't fracture it or break it. maybe get some xrays. i stubbed my toe once and it felt broken but got xrays and it wasn't but it turned dark purple and was swollen and sore and took a few weeks to get better. i think that rsd makes any minor bumps hurt and swell more because i believe it weakens our immune system. i hope that you didn't break it and that you feel better soon. in the meantime just remember that icing rsd parts can damage your nerves further and that you may want to try heat instead. take care.