What your play?

[kiemo]

I am not a good NL player, the betting sizes really mess me up, but in home tourneys guys wont play limit.

Hero - 1100
SB - 2000
Button - 1000
UTG - 2500

Blinds are 100/200, moving up to 200/400 in about 5 minutes

Hero is BB and dealt K [img]/images/graemlins/diamond.gif[/img] 3 [img]/images/graemlins/club.gif[/img]

UTG folds, Button calls, SB folds, Hero checks

Flop 10 [img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/spade.gif[/img]

Hero checks, Button checks

Turn K [img]/images/graemlins/club.gif[/img]

Hero checks, Button bets 200

What does hero do?