PokerStars 1/2 Hold'em (6 handed) converter

Preflop: Hero is SB with 9[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, Button calls, Hero completes, BB checks.

Flop: (4 SB) K[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, UTG calls, Button calls, <font color="#CC3333">Hero raises</font>, BB calls, UTG calls, Button calls.

Turn: (6 BB) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, UTG calls, Button folds, <font color="#CC3333">Hero 3-bets</font>, BB calls, UTG calls.

River: (15 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, UTG calls, Hero calls.

Final Pot: 18 BB

Unfortunately, no reads.

Preflop: I don`t always complete this SB J9o. But in this case i did.

Flop: I don`t think i made a mistake here, i would still c/r this to 'protect' my two pair against low flush-fishes (although i realise they will prob. call it out) and because i want to show i`m holding a strong hand.

Turn: I always experience it quite difficult when i need to tri-bet and when not (of course this depends a lot on reads of players). I felt like BB was holding a flush draw, or an toppair with medium kicker (maybe straight draw?).

River: how i played this hand till now, it`s obvious i`m calling this one. Besides when the BB got raised by UTG.

What do u think?