How to track your Gmail account activity

hi

i think someone hack my gmail password because some mails which i didn't read that shows the read mark. Can anyone know how to check last Gmail account date and time ?

Thanks

To track the gmail activity just Login into the gmail account go to the bottom of your Gmail page. You can see Last account activity at the bottom of the page. Click on the Details Link. This will bring up a window that will list the date and time that recent account access was made. Also this window will list the individual IP Address from where the access was made.

It shows user information about recent activity in the Gmail account. Recent activation information includes any times that the mail account was accessed, using a regular web browser, through a POP or IMAP client, from Google Toolbar or a mobile device, and other access type.