JJ LOL DONKAMENTS?

[GSykes]

I don't really play tournaments but decided to play the 50+5 6max donkament on stars.

Villian is a 36.2/23.4/3
Very very very active on the FT bubble.

Poker Stars, $50 + $5 NL Hold'em Tournament, 500/1,000 Blinds, 6 Players
LeggoPoker Hand History Converter

SB: 18,900
BB: 75,171
UTG: 3,817
MP: 47,780
Hero (CO): 21,154
BTN: 25,178

Pre-Flop: (2,100) J[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/diamond.gif[/img] dealt to Hero (CO)
2 folds, <font color="red">Hero raises to 2,750</font>, 2 folds, BB calls 1,750

Flop: (6,600) 6[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets 3,333</font>, BB calls 3,333

Turn: (13,266) 4[img]/images/graemlins/club.gif[/img] (2 Players)
BB checks, Hero checks

River: (13,266) 2[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">BB bets 43,000</font>

How bad is my turn check?
How bad is a river fold?
How bad is a river call?