How should I have played this flop?

I was in a MTT (70 players started) down to 3 tables (27 players). Blinds 300/600. I was the BB and was dealt Qs 9s. Chip counts are as follows:

UTG (9000)
MP (5000)
BB (8800)-Hero

UTG player limps in, MP raises the minimum here..bumps it up to 1200. (Pot - 2700) I call with my Qs9s from the BB. UTG player calls preflop raise. (POT - 3900). Flop comes Q-7-2 all clubs. I think for a few seconds then come out with 2000 in chips. The UTG player thinks for a minute or so before raising me all-in (5600). The preflop raiser (MP) folds. I put my opponent on a draw with 2nd pair at best and call. He flips over QJ no clubs and his Jack kicker holds up. Should I have just moved all-in on the flop or should I have done something different in my play here? I was one of the better chip stacks in the room heading into the hand and thinking back about the hand probably should have folded the hand after the reraise which would have left me about 5600 in chips.