how do u play this? flopped str8

[blendedsuit]

should i be check raising, slowplaying, or betting out like i did? I have been betting out before, and getting played back against a lot.
Party Poker No-Limit Hold'em, $ Hero (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

Button ($168.11)
SB ($33.25)
Hero ($59.55)
UTG ($94.50)
UTG+1 ($108.65)
MP1 ($96.55)
MP2 ($84.80)
MP3 ($121.80)
CO ($24.50)

Preflop: Hero is BB with 5[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.50.
<font color="#666666">2 folds</font>, MP1 calls $1, <font color="#CC3333">MP2 raises to $3</font>, <font color="#666666">2 folds</font>, Button calls $3, <font color="#666666">1 fold</font>, Hero calls $2, MP1 calls $2.

Flop: ($12.50) 3[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $4</font>, MP1 folds, MP2 folds, Button folds.

Final Pot: $16.50

Results in white below: <font color="#FFFFFF">
No showdown. Hero wins $16.50. </font>

[jkkkk]

fold pf

[shootaa]

if the raise were more and you were somehow in this (i dont mind the call w/ so many ppl) i would check call and donk the turn for a decent sized bet (2/3 ish). but in this spot, i wouldnt think about committing an overpair as much and just donk it up to get some action