My features are missing!

My features have gone missing from the "insert" tab up top. I have no clue where they went or how to find them. Without my features I can't 'combine', 'join', 'mirror', and other things. I looked under every tab and every arrow on the screen and looked through all my toolbars. No luck. Has anyone ever just lost their features tab? Does anyone have suggestions for what I should do?

Feeling very frustrated.

SolidworksParts And Features