($11) trips against 3-flush all-in on turn

Party Poker $10+1, level 1, no reads. Please critique my line/thinking.

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (9 handed) converter

Hero (t785)
BB (t1117)
UTG (t840)
UTG+1 (t785)
MP1 (t800)
MP2 (t785)
MP3 (t725)
CO (t1418)
Button (t745)

Preflop: Hero is SB with 2[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls t15, <font color="#666666">2 folds</font>, Button calls t15, Hero completes, BB checks.

I know Q2o sucks, but for only t5 more (assuming BB doesn't raise) I complete here after limpers all the time in level one. Bad?

Flop: (t60) Q[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets t15</font>, BB folds, MP2 folds, <font color="#CC3333">Button raises to t45</font>, Hero calls t30.

I figured I had a chance to double up early, so I wanted to keep people in. I thought button’s raise could mean anything – an attempt to steal based on my weak bet, maybe a small pair or A3 or a heart draw. I still wanted to keep him in, so only called his raise. Too greedy? Should I have reraised here?

Turn: (t150) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t200</font>,

a third heart worried me, I wanted to knock him off a single heart draw. Should I have check-raised here instead?

<font color="#CC3333">Button raises to t685 (All-In)</font>, Hero calls t485.

Do you even consider folding to his all-in re-raise? I figured a pocket pair was as likely as a made flush, couldn’t see folding getting 2:1 with 10 outs...

Any comments will be appreciated.