I fell off a chair changing a lightbulb on my patio. I landed on a concrete step on kidney area. What now?

I%26#039;m moving but I can tell it%26#039;s not gonna be good later. I have a very busy next 5 days. Going on vacation. Friends in town tonight and plans to take them out. I%26#039;ve never had a fall and hurt my back and don%26#039;t know what to do now. Help!|||Go to the ER; do it NOW. It could be serious, and if it is, it%26#039;s NOT going to get better by itself. The sooner you get it checked, the sooner you%26#039;ll start getting better.