200NL Trips minraised on flush completing turn

[nogenius]

PokerStars No-Limit Hold'em, $2 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO ($151.60)
Hero ($200)
SB ($203.60)
BB ($284.30)
UTG ($229.15)
UTG+1 ($65.15)
MP1 ($67.70)
MP2 ($91.45)
MP3 ($44)

Preflop: Hero is Button with A[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">6 folds</font>, <font color="#CC3333">Hero raises to $7</font>, <font color="#666666">1 fold</font>, BB calls $5.

Flop: ($15) 3[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $11</font>, BB calls $11.

Turn: ($37) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $23</font>, <font color="#CC3333">BB raises to $54</font>, Hero ???

---

BB is an unknown, I just got to the table. The minraise was very fast if that matters.

What's your move here?