right time for turn check?

[beanwater]

$1/2 5 players
hero in CO J [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/spade.gif[/img]
UTG raises, hero 3 bets, button folds, SB folds, BB calls UTG calls
flop: A [img]/images/graemlins/diamond.gif[/img]5 [img]/images/graemlins/club.gif[/img]4 [img]/images/graemlins/spade.gif[/img]
bb check, utg checks, hero bets, bb calls, utg folds
turn: 2 [img]/images/graemlins/spade.gif[/img]
bb checks, hero checks
river: 6 [img]/images/graemlins/spade.gif[/img]
bb bets, hero calls

is this a good spot for checking the turn or not? pot is large so betting is good, but i dont have a read on the villain and dont wont to fold if c/r.

[nutlow]

i check behind in this spot