PokerStars No-Limit Hold'em, $0.05 BB (7 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

CO ($6.94)
Button ($3.30)
SB ($21.43)
BB ($9.93)
UTG ($15.51)
MP1 ($6.55)
Hero ($5.33)

Preflop: Hero is MP2 with , .
UTG calls $0.05, 1 fold, Hero raises to $0.2, 1 fold, Button calls $0.20, SB calls $0.18, 1 fold, UTG calls $0.15.

Flop: ($0.85) , , (4 players)
SB checks, UTG checks, Hero bets $0.9, Button folds, SB raises to $2.7, UTG folds, Hero ??

What are we thinking?