AK in the SB.

Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP3 ($24.65)
CO ($22.98)
Button ($8.22)
Hero ($24.40)
BB ($7.31)
UTG ($23.25)
UTG+1 ($24.47)
UTG+2 ($30.23)
MP1 ($21.83)
MP2 ($30.70)

Preflop: Hero is SB with A, K. Hero posts a blind of $0.10.
2 folds, UTG+2 calls $0.25, 4 folds, Button calls $0.25, Hero (poster) raises to $0.9, BB calls $0.75, UTG+2 calls $0.75, Button calls $0.75.

Flop: ($4) Q, 3, 7 (4 players)
Hero...

I'm not too crazy about a c-bet here into 2 calling stations and a LAG on the button with this board. Do you c-bet anyway and shut down if a non-heart falls (I'd do this if one of those diamonds were black)? Or check, call a small bet when it comes back/fold to a decent sized bet?