Why did I choke on the bubble?

[pokerraja]

First off im in a horrible slump. It seems like I find new ways to fuc up every time. It wasnt too long ago, that I was making final tables regularly, one time even twice in the same day. Now, I can't even make the first hour. lol. enough bitching. But you get the point, just like in other sports, when things go bad (lakers for example), they go bad! And its mostly my stupid paly to fault. Well, here is the hand im pissed off about.

bubble time. 46 players left, 40 make the money. My table is 6 handed, while the other tables are 10 handed. We have had 2 players bust on the last 2 hands. Its a very active table. I have about T5500, BB is T600. Folded to me in cutoff with AQs. I think for a minute and then push all-in. Did I mention the 3 players behind me all have big stacks and are very active! Well, the BB with the big stack stack calls me with his 77. I lose.

What should I have done here? Im not sure of the play.