No hand history with the villian.

Party Poker No-Limit Hold'em, $ Hero (9 handed) from (Format: Bet The Pot)

saw flop|saw showdown

SB ($52)
Hero ($47)
UTG ($62.88)
UTG+1 ($62.50)
MP1 ($23)
MP2 ($32.32)
MP3 ($86.90)
CO ($45.98)
Button ($52.15)

Preflop: Hero is BB with , . SB posts a blind of $0.25.
UTG calls $0.50, 4 folds, CO calls $0.50, 1 fold, SB (poster) completes, Hero raises to $2, UTG calls $2, CO folds, SB calls $2.
I think I should have raised to atleast 3 here.

Flop: ($8) , , (3 players)
SB checks, Hero bets $6, UTG raises to $16, SB folds.

What is your move?

Final Pot: $30

Thanks for all of the help!

3 people already in and you'll be OOP the rest of the hand. $3 preflop is the minimum, I would tend toward $3.50 to $4. Of course I've been playing Tribeca lately where they love to call preflop.

I like the fold on the flop. Any other option you're playing for your stack, out of position, with just the overpair. Bleah.