99 3bet pot

iPoker - $0.20 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

Hero (BB): 298.8 BB
UTG: 40 BB
MP: 100 BB
CO: 185.1 BB
BTN: 101.6 BB
SB: 136.3 BB

SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has 9♥ 9♣

fold, fold, fold, fold, SB raises to 2 BB, Hero raises to 7 BB, SB calls 5 BB

Flop: (14 BB, 2 players) Q♣ 5♠ T♦
SB checks, Hero checks

Turn: (14 BB, 2 players) 5♦
SB checks, Hero bets 7 BB, SB raises to 28 BB, Hero calls 21 BB

River: (70 BB, 2 players) Q♦
SB bets 40 BB, Hero calls 40 BB

Hero shows 9♥ 9♣ (Two Pair, Queens and Nines) (Pre 86%, Flop 95%, Turn 100%)
SB shows 7♠ 8♣ (Two Pair, Queens and Fives) (Pre 14%, Flop 5%, Turn 0%)
Hero wins 142.5 BB

300 hands, 26/22, 3bet 12, 4bet 34, flop raise 1/2, call 1/2, AF flop 11.5
attempt to steal sb 36%

Is it ok 3bet here vs aggro regg?

Is it ok check behind and bluff catch? On turn and river I called his bets because it makes 0 sense to check twice on this board and they play so aggro. I think he realized I didnt have strong hand, so wanted to fold me.