Apple

hey guys, so i just did something pretty stupid!! :D my law lectures are uploaded online and deleted after a week, but i usually keep the tab open for 2-3 weeks because i'm great at procrastinating and usually watch the lectures at a later time. my macbook just did an update and the tab was closed. when i refreshed all of the tabs, it obviously didnt take me back to the video. now i'm wondering, is there any way to get the video back? like through going through my safari cache files and looking for a html file of some sort? or is this my sign to drop out