Tilly, ignore the doctors and go to the A&E dept at hospital NOW. tell them you fell down the stairs and LAY IT ON THICK how much pain you are in. chances are you've only bruised your cocsys (don't know how to spell it but that's how you say it... its the bone at the base of the spine) but you don't want to take the risk. and its better to be safe than sorry. a friend of mine fell down the stairs and cracked a vertebrae .. and walked round with it for 3 weeks!!! and those stairs had carpet on them. get your ass down the hospital NOW! how can a doctor look at you and tell you its not broken. that's impossible. GP's know a little about everything but they are not experts or consultants. just leave your job now and go to the hospital. you may have to wait a while because its not an imminent emergency but they won't turn you away, they are not allowed.