How Can I Get My Gmail Contacts Back, Vido And All Upload Info When Account Has

If you're concerned that someone may have gained access to your account, Google suggests that you change your password:

1. Sign in to Gmail at http://mail.google.com.
2. Click Settings at the top of any Gmail page.
3. Click Accounts and Import.
4. Click Google Account settings.
5. Click Change password under Personal information.
6. Complete the form and click Save to make your changes.

This information is from this Google page, which you might wish to review for further guidance.