To call or not to call . . .

$75 MTT w/ R+A's. R+A period is over and blinds are 100/200. All stack sizes are b/w 6,000 to 12,000 range (M's of at least 20).

Hero is in BB w/ roughly 8,500 in chips and pocket 3's.

UTG raises to 500.
MP calls 500.
MP+2 calls 500.
Button calls 500.
SB calls 400.
Hero calls 300.

Flop: 3 [img]/images/graemlins/club.gif[/img] Q [img]/images/graemlins/heart.gif[/img] J [img]/images/graemlins/heart.gif[/img]

SB checks.
Hero checks.
UTG fires out 500.
All players call.
Hero raises to 3000 total.
SB is only player who calls.

Heads up on the turn: T [img]/images/graemlins/heart.gif[/img] - could there have been a worse card than this one?

SB looks at me and checks.
Hero checks.

River: 7 [img]/images/graemlins/club.gif[/img]

SB goes all in and has me covered slightly.
Hero's action?
Results below and questions below.

<font color="white"> </font> I make a crying call and he turns up A [img]/images/graemlins/heart.gif[/img] 9 [img]/images/graemlins/heart.gif[/img] for the nuts. I guess I was hoping for him to have QJ or something like that, even though the action is clear of a drawing hand. Should I have gone all in on flop? played it like I did? or folded to his river bet? <font color="white"> </font>