AQs nutflush draw

Hi!

on the flop i could call, but the Open raiser cbets a lot so i though its ok to raise this as a semibluff. a guy calls behind and the cbettor folds.

Now on the turn i had no idea of what to do. I was actually gonna check/fold as weak as that may sound, its just that i think that his range when he overcalls my raise is pretty much sets, JJ & TT i'd fold if i were him to be honest, lets assume he overcalls JJ thats pretty much the weakeast hand of his range, and then i block like every single potential flush draw he could have. JTs KJs KTs are pretty much the only flush draws he could have. With that said, i think betting on the turn makes no sense, i have 0% fold equity, i though about betting though but smallish, like 1/3 of the pot or something, but mostly as a blocking bet to get to see a river, and then when i decided to check i was gonna check fold a normal sizing and call if he made a small size. I dont really know what 1/3 of the pot sizing by him means here, i dont really see any hand that would want to do that, but anyway, check raising seems bad, and the only option is to call

what would you have done on the turn?

Poker Stars, $0.25/$0.50 No Limit Hold'em Cash, 9 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

SB: $50.70 (101.4 bb)
BB: $53.04 (106.1 bb)
UTG+1: $51.54 (103.1 bb)
UTG+2: $51.36 (102.7 bb)
MP1: $74.57 (149.1 bb)
Hero (MP2): $50 (100 bb)
MP3: $49.75 (99.5 bb)
CO: $21.20 (42.4 bb)
BTN: $111.66 (223.3 bb)

Preflop: Hero is MP2 with Q A
UTG+1 folds, UTG+2 raises to $1.50, MP1 folds, Hero calls $1.50, MP3 calls $1.50, 4 folds

Flop: ($5.25) 6 7 9 (3 players)
UTG+2 bets $3.50, Hero raises to $10.20, MP3 calls $10.20, UTG+2 folds

Turn: ($29.15) 2 (2 players)
Hero checks, MP3 bets $10, Hero calls $10

River: ($49.15) T (2 players)
Hero checks, MP3 bets $28.05 and is all-in, Hero folds

Results: