My Casio EX-Z29 says "Lens Error" and is out of focus. Help!?

I did drop it, while in its case..on the gr, but it was fine after that. 3 days later, I turned it on and it was extremely out of focus, I zoomed in and it was now in-focus but then it said "Retry power on" and shut off, while the lens was still open. I turned it back on and it said "Lens error" and it shut off with the lens inside. How can I fix it...or do I have to get professional help?