how to check if someone logged into your fb account? PLS HELP :(?

[hh]

Is it possible to find out who logged int your fb account? I know all about the account settings, going to current sessions etc.
However, if I'm not wrong, it only traces CURRENT online sessions and does not show the sessions if they're not active at the same time that you are.
That is to say, if someone were to login to my fb account and out before I login to it and check my current sessions, I wouldn't be able to find out if someone had access to my account beforehand.
Please help me, it's really urgent. Thanks in advance

[Rathore]

its very tough to find out that,but you can force that person to logout !!
follow these steps
1.change your password
2.tick the "log me out of othr devices" option
it is possible someone is reading your notifications and messages if they show up as read even if you have not seen them,because they have already seen it !!
all the best
good luck

[Louise]

Go to account settings >> security >> There you can see all the devices logged into your account.