How to stop others using my facebook account?

[E E]

I have changed my password of my facebook account and my email but somebody can still access to my account.
No don'T Share my computer.

wHAT'S THE EMAIL I CAN CONNTACT?
pAUL nEWmAN:NO I HAVENT

[Dr. B_IT]

are u sharing a computer with someone else? they may be tracking your movements (keystroke logger).

[theone]

contact facebook or your email

[Paul Newman]

Your a total idiot. You either use crap passwords, or you told someone it, or you keep leaving facebook logged on on your computer.

[Evan W]

This is an addition to the other answers...
use https://www.facebook.com (instead of http://)
Get it by going to: https://www.facebook.com/editaccount.php?drop
and go to Account Security click "change"
checkoff:
Secure Browsing (https)
Browse Facebook on a secure connection (https) whenever possible

Note: You may not play games or use apps using https://

[dannyboy2111]

Change it again if they still have access after resetting it a 2nd time than Contact facebook and Report to them about it http://www.facebook.com/help