Flush draw and Pair on the Flop...Villian Pushes

[Gugel]

PokerStars No-Limit Hold'em, $1.00 BB (4 handed) converter

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

<font color="#C00000">Button ($105.65)</font>
<font color="#C00000">Hero ($124.60)</font>
BB ($98.50)
UTG ($19.50)

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img].
UTG calls $1, Button calls $1, Hero completes, <font color="#CC3333">BB raises to $2</font>, UTG calls $1, Button calls $1, Hero calls $1.

Flop: ($8) A[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $6</font>, BB folds, UTG folds, <font color="#CC3333">Button raises to $12</font>, <font color="#CC3333">Hero raises to $50</font>, <font color="#CC3333">Button raises to $103.65</font>, Hero calls $53.65.

Final Pot: $215.30

I overbet the flop cause I wanted to either take the pot right there or be all-in. Thoughts?