KK what do I do on the turn? (25NL)

I Have played no pots with villain. I don't want to bet, because that commits me to a pot I may very well be behind in. Not sure what my plan is if he bets after a check though.

Help

PokerStars No-Limit Hold'em, $0.25 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($17.85)
UTG ($25)
Hero ($24.55)
Button ($49.70)
SB ($50.60)

Preflop: Hero is MP with K, K.
UTG raises to $1, Hero raises to $3, Button calls $3, 1 fold, BB calls $2.75, UTG folds.

Flop: ($10.10) 7, 8, Q (3 players)
BB checks, Hero bets $7, Button calls $7, BB folds.

Turn: ($24.10) Q (2 players)
Hero?

check/fold

If turn is a non-spade check/call something not too big

Preflop action is weird - two guys cold call a reraise then the original raiser folds. wtf?.

Anyway, pot is $24, with $15 left behind I'm tempted to push. Any reads on the button here?