This happens alot, what do I do differently?

[steamboatin]

Absolute Poker
Limit Omaha Ring game
Limit: $2/$4
9 players
Converter

Pre-flop: (9 players) steamfish is UTG+1 with 3[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img]
UTG folds, steamfish calls, MP1 folds, MP2 calls, 2 folds, Button calls, SB folds, BB checks.

Flop: J[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] (4.5SB, 4 players)
BB checks, <font color="#cc0000">steamfish bets</font>, MP2 calls, Button calls, BB folds.

Turn: 4[img]/images/graemlins/club.gif[/img] (3.75BB, 3 players)
<font color="#cc0000">steamfish bets</font>, MP2 calls, Button calls.

River: Q[img]/images/graemlins/club.gif[/img] (6.75BB, 3 players)
<font color="#cc0000">steamfish bets</font>, <font color="#cc0000">MP2 raises</font>, Button folds, steamfish calls.

Results:
Final pot: 10.75BB

I have to bet the whole way don't I?