44 from EP. Big hand, big pot. I count at least one error here. What about you?

[Allday Everyday]

So I think I made at least a single error in this hand. I'm just checking to see what you all think. There are a few decisions I am not sure about. Maybe I should say there are two errors. Three even. Could be four. The more I think, the more possible errors I see. Please help. All comments appreciated.

No specific reads or stats on any player. They seem to be average, solid players.

10/20 Online. 7 handed.
Preflop: Hero is UTG+1 with 4 [img]/images/graemlins/heart.gif[/img], 4 [img]/images/graemlins/diamond.gif[/img]. (7 players)
UTG limps, Hero limps, fold, fold, Button raises, SB calls, BB calls, UTG calls, Hero calls.

Flop: 8 [img]/images/graemlins/heart.gif[/img], 4 [img]/images/graemlins/spade.gif[/img], Q [img]/images/graemlins/club.gif[/img]. (5 players)
SB checks, BB checks, UTG bets, Hero calls, Button raises, SB folds, BB coldcalls, UTG calls, Hero calls.

Turn: 2 [img]/images/graemlins/club.gif[/img]. (4 players)
BB checks, UTG checks, Hero bets, Button raises, BB coldcalls, UTG folds, Hero reraises, Button folds, BB calls.

River: T [img]/images/graemlins/club.gif[/img]. (2 players)
BB checks, Hero bets, BB raises, Hero calls.

I think turn and river are good play.