AA cracked - season 2

[pirlouit]

No particular read on BU.

B2B limit 1/2 (4 handed)

Preflop: Hero is BB with A, A.
CO calls, <font color="#CC3333">BU raises</font>, SB folds, <font color="#CC3333">hero 3-bets</font>, CO calls, <font color="#CC3333">BU caps</font>, Hero calls, CO calls.

Flop: Q, 5, T <font color="#0000FF">(3 players)</font>
Hero checks, CO checks, <font color="#CC3333">BU bets</font>, <font color="#CC3333">Hero raises</font>, CO folds, <font color="#CC3333">BU 3-bets</font>, hero calls.

Turn: 9 <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, BU calls.

River: J <font color="#0000FF">2 players)</font>
<font color="#CC3333">Hero bets</font>, BU calls.

Now that I review the hand, my donk on the turn appears quite strange.
Maybe I wanted to play bet/fold, but I don't think I have much fold equity here. Should have called down ?