How do we continue on this flop?

PokerStars - $0.10 PL Hi FAST (6 max) - Omaha Hi - 6 players
Hand converted by PokerTracker 4: http://www.pokertracker.com

BTN: 114.6 BB (VPIP: 100.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 1)
SB: 107.6 BB (VPIP: 25.53, PFR: 12.77, 3Bet Preflop: 0.00, Hands: 49)
BB: 60.9 BB (VPIP: 14.76, PFR: 6.27, 3Bet Preflop: 1.74, Hands: 279)
UTG: 213.1 BB (VPIP: 23.40, PFR: 18.44, 3Bet Preflop: 4.55, Hands: 715)
MP: 100 BB (VPIP: 75.00, PFR: 12.50, 3Bet Preflop: 2.94, Hands: 75)
Hero (CO): 267.1 BB

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has Qc Qh 9c 2h
fold, MP calls 1 BB, Hero raises to 4 BB, BTN raises to 14.5 BB, fold, fold, MP calls 13.5 BB, Hero calls 10.5 BB

Flop : (45 BB, 3 players) Qd Kc 9h
MP bets 40 BB, Hero ?

We got one to act after us.. I like some comments.
i give my comments after.