Two Pair vs. Raise on the Turn

This is my first HH analysis post (so please correct my posting etiquette as needed). This was the beginning of the 2nd orbit so I have no reads and PT had no stats on any of the players. That said, this was a .25/.50 beginner table at Party (only 6 more days of eligibility there unfortunately, sigh!)

Villian is the SB. I give details of what I was thinking on each street:

Party Poker 0.25/0.50 Hold'em (9 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with Q[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/diamond.gif[/img]. CO posts a blind of $0.25.
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">2 folds</font>, MP3 calls, CO (poster) checks, <font color="#666666">1 fold</font>, SB completes, Hero checks.

<font color="blue"> As I see Q2o and check as the BB I'm thinking: "Gosh, I hope Q2 DOESN'T come on the flop and I get forced to play this only to lose to a suckout." </font>

Flop: (5 SB) 2[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG+1 calls, MP3 folds, CO calls, SB calls.

<font color="blue"> So...what comes on the flop...Q2. I bet for value AND information to see if anyone has a range of hands involving the K on the board. </font>

Turn: (4.50 BB) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG+1 calls, CO calls, <font color="#CC3333">SB raises</font>, <font color="#CC3333">Hero 3-bets</font>, UTG+1 folds, CO calls, <font color="#CC3333">SB caps</font>, Hero calls, CO calls.

<font color="blue"> I got 3 callers and no raise on the flop after my bet, so I'm feeling pretty confident of best hand. SB checks, I bet, it goes around and SB re-raises. Where did that come from? I'm thinking in the range of KK or trips or a strong flush draw. I 3-bet to protect, he caps but I'm calling this down all the way (Thank you Ed Miller!) </font>

River: (17.50 BB) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls, CO calls.

<font color="blue"> Third spade falls and I'm crying (and calling) thinking one of them got the flush. </font>

Final Pot: 20.50 BB

See results below in white:

<font color="white"> Hero wins with two pair, queens and twos. SB shows Kc Jd, a pair of kings.
Phew, did I play this correctly or did I slow down unnecessarily? I'm definitely not complaining - I just want to see if I missed something.</font>

Any thoughts? Thanks!