Why You Need to Get Gmail Customer Tech Support to Your Gmail AccountInternet Software Design & ServicesUpdated on May 30, 2016 View more like this | Visit LONDON, WV | Contact Tech Support |

See if you find any activity which you do not recognize. Also it would be good to check the sent mails though it is quite possible that you might not find anything there as hackers usually delete any evidence of their activity. You should immediately change your password and the run a thorough scan of your computer to eliminate any Malware or viruses.