Please Critique my play here. This has been happening to me all week.

[CaptSensible]

BB called my 3x BB bet with Q 7os.
I need to know if my play is faulty or if varience/fish are just getting lucky and killing me.

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (7 handed) converter

Button (t465)
SB (t1695)
BB (t955)
UTG (t2050)
MP1 (t685)
MP2 (t1010)
Hero (t1140)

Preflop: Hero is CO with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t300</font>, <font color="#666666">2 folds</font>, BB calls t200.

Flop: (t650) A[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>

Turn: (t650) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>

River: (t650) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: t650