Cold-calling 3 bets on flop

[Arcturus]

I froze up after the flop. I think my brain short circuited.

Both blinds are LAG. UTG+2 entered 3 hands earlier and had played all 3.

PokerStars 0.05/0.10 Hold'em (10 handed) converter

Preflop: Hero is MP3 with Q[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img]. MP1 posts a blind of $0.05.
<font color="#666666">2 folds</font>, UTG+2 calls, MP1 (poster) checks, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">SB 3-bets</font>, BB calls, UTG+2 calls, MP1 folds, Hero calls.

Flop: (13 SB) J[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">BB raises</font>, <font color="#CC3333">UTG+2 3-bets</font>, Hero calls, SB calls, <font color="#CC3333">BB caps</font>, UTG+2 calls, Hero calls, SB calls.

What is this? I have TPGK and I have to decide whether to cold-call 3 bets or cap? I decided to call down unless one of my cards showed up on the turn or river.

Turn: (14.50 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, UTG+2 calls, Hero calls, SB calls.

River: (18.50 BB) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, UTG+2 calls, Hero calls, SB folds.

Final Pot: 21.50 BB

By the time the river showed, I figured I was cooked. However, the pot was too big to fold. Did I play this right or should I have left the hand earlier?