$33: 2 Pair First Level

Sorry no hand history.

Preflop: Blinds 10-20. Second hand of the tourney.

Relevant stacks: Hero = 1480, BB = 1500.

UTG+2 and CO+1 limps. Hero limps with [ Ac 9s ] on the button. SB and BB check/calls.

Pot is 100.

Flop: [As Jc 9c]

Checked to hero. Hero bets 50, bb calls and everyone else folds.

Pot is 200.

Turn: As Jc 9c [3d]

BB checks. Hero bet 90, BB raises to 180, Hero raises to 300, BB raises to 420, I call.

Pot is 1040.

River: As Jc 9c 3d [7c]

BB goes all-in. Hero ???

Edit: Comments on all streets are welcome and preferred.