Was I stupid?

PokerStars 0.10/0.20 Hold'em (10 handed) converter

Preflop: Hero is MP3 with T[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">MP1 raises</font>, MP2 calls, Hero calls, <font color="#666666">2 folds</font>, <font color="#CC3333">SB 3-bets</font>, BB calls, UTG+1 calls, MP1 calls, MP2 calls, Hero calls.
It was probably idiotic to call the 3-bet, but I really wanted to see the flop with this hand. I figured I had position and I could use it.

Flop: (18 SB) J[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, BB checks, UTG+1 checks, <font color="#CC3333">MP1 bets</font>, MP2 calls, Hero calls, <font color="#CC3333">SB raises</font>, BB folds, UTG+1 folds, MP1 calls, MP2 calls, Hero calls.
So, I flop a straight draw. I think I'm getting the odds to call, I'm just worried about another diamond.

Turn: (13 BB) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, MP1 calls, <font color="#CC3333">MP2 raises</font>, Hero calls, <font color="#CC3333">SB 3-bets</font>, MP1 calls, MP2 calls, Hero calls.
I think SB has a big PP. I have no idea what MP1 has, he's been betting like a maniac all night, and I've caught several of his bluffs. I still think I'm okay calling to catch my straight. Dumb?

River: (25 BB) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">MP1 bets</font>, MP2 folds, Hero calls, <font color="#CC3333">SB raises</font>, <font color="#CC3333">MP1 3-bets</font>, Hero calls, SB calls.
Crap! A diamond. The pot is huge, I made my straight, so I called.
Final Pot: 34 BB

Bonus points to anyone who correctly puts these 2 on their hands. I tried, and I was dead wrong.