NL25 AKs multiway pot overcards and NFD

[winnnar]

Third or fouth hand at the table. No reads. I actually meant to open raise for $1 here but misclicked. How often are we behind here? Would flat calling flop be a better play?

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

CO ($15)
Button ($30.80)
SB ($5.70)
BB ($41.20)
UTG ($24.90)
Hero ($25)

Preflop: Hero is MP with , .
1 fold</font>, Hero raises to $1.25</font>, CO calls $1.25, 1 fold</font>, SB calls $1.15, BB calls $1.

Flop: ($5) , , (4 players)</font>
SB checks, BB bets $3</font>, Hero raises to $9</font>, CO raises to $13.75</font>, SB folds, BB folds, Hero calls $4.75.

Turn: ($35.50) (2 players)</font>

River: ($35.50) (2 players)</font>

Final Pot: $35.50