I had a Brazilian Butt Lift 3 weeks ago and fell yesterday. Could I have damaged my results?

What is the likelihood I did damage to my butt 10 days post-op BBL and is there anything I can do NOW to minimize damage? back lipo with BBL on April 21, 2014. Yesterday I fell back into hard object about the size of a doorknob RIGHT where one of my fat transfers was injected (very near where stitches are on top of butt). I'm not sure HOW hard I hit it. It definitely hurt and is tender today although I don't see any obvious bruise yet. I am heartbroken that I might have caused damage. I have been babying my butt for 11 days and haven't put any pressure on it whatsoever. Please advise. Thanks so much!!