Should I have checked this flop?

I'll admit I think I'm getting out of line with this SB open, but I did witness BB defend infrequently in the blinds. On this flop, is my bet a mistake and will I often run into check raises by betting here? My thinking is, granted, texture is wettish, but I will have good equity when called w/ gutshot and a flush that is often best. What do you think, is this a textbook flop check? Thanks as always for feedback!

PokerStars - $0.05 NL (6 max) - Holdem - 5 players
Hand converted by PokerTracker 4

BTN: 42.6 BB (VPIP: 33.33, PFR: 18.18, 3Bet Preflop: 14.29, Hands: 33)
Hero (SB): 100 BB
BB: 102.2 BB (VPIP: 29.03, PFR: 22.58, 3Bet Preflop: 15.38, Hands: 33)
UTG: 130.4 BB (VPIP: 18.75, PFR: 12.50, 3Bet Preflop: 0.00, Hands: 34)
CO: 100 BB (VPIP: 29.51, PFR: 16.39, 3Bet Preflop: 0.00, Hands: 63)

Hero posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has 4♥ T♥

fold, fold, fold, Hero raises to 3 BB, BB calls 2 BB

Flop: (6 BB, 2 players) K♥ Q♣ 9♥
Hero bets 3.6 BB, BB raises to 13.2 BB, fold

BB wins 12.6 BB