Is this ok? KK hand

[LowDown22]

Getting really frustrated at $2/4 and questioning basically every play I make. Is this ok?

Party Poker 2/4 Hold'em (10 handed) converter

Preflop: Hero is UTG with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, UTG+2 calls, <font color="#666666">2 folds</font>, MP3 calls, <font color="#666666">3 folds</font>, BB calls.

Flop: (8.50 SB) 6[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, UTG+2 calls, <font color="#CC3333">MP3 raises</font>, BB folds, Hero calls, UTG+2 calls.

Turn: (7.25 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, UTG+2 folds, <font color="#CC3333">MP3 raises</font>, Hero calls.

River: (11.25 BB) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP3 bets</font>, Hero calls.

Final Pot: 13.25 BB

Flop and turn both feel wrong to me. Could I have folded after the turn raise, or is there still enough of a chance that he has 2 pair and I could still outdraw him?