Pocket KK Hold 'em or Fold 'em?

Sat for 2 rotations before getting a worthy starting hand. No reads on villain.

PokerRoom No-Limit Hold'em, $0.25 BB (6 handed) FTR converter on zerodivide.cx

($12.25)
MP ($23.70)
CO ($18.75)
Button ($9.25)
SB ($32.15)
BB ($53.75)

Preflop: is Blockndig with K [img]/images/graemlins/spade.gif[/img] ,K [img]/images/graemlins/heart.gif[/img] .
<font color="#CC3333"> raises to $0.5</font>, Blockndig calls $0.50, CO calls $0.50, <font color="#666666">1 fold</font>, SB calls $0.35, BB calls $0.25.

I only called here because I didn't want to scare potential loose players out of the pot. Should I have raised here?

Flop: ($2.50) Q[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets $1</font>, BB calls $1, calls $1, Blockndig Raises or Folds?

Villain was in the blinds so I thought he might have limped with some trash like A2 or Q2. Until that point his VPIP was 46%.

I was thinking of raising 2 but I wasn't sure if I was dominated... if he reraised do I fold.

The other thing is, could somebody help me calculate Pot Odds and some tips on how they would calculate them while playing. Thanks!