Hi, may I answer your health queries right now ? Please type your query here... Hello. Exactly one week ago today, I slipped on a Rubber mat and went down flat on my back! Since then my back has been extremely painful. I have been taking painkillers which don't seem to touch the pain unless I take double the dose! apart from that I have been rubbing in Ibuleve, arnica, and using a cold spray. Could I have done a serious injury, or is this just bruising (I can see a large bruise!) and what can I do to ileviate the pain?!!