Hero (BB): 100 BB
UTG: 106 BB
CO: 96.5 BB
BTN: 106.5 BB
SB: 102 BB
SB posts SB 0.5 BB, Hero posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has A♥ 7♣
fold, fold, fold, SB raises to 3 BB, Hero calls 2 BB
Flop: (6 BB, 2 players) A♠ 7♦ K♦
SB bets 3 BB, Hero raises to 9 BB, SB raises to 27 BB, Hero calls 18 BB
Turn: (60 BB, 2 players) 5♠
SB bets 72 BB and is all-in, Hero ???
What are your thoughs here?