QQ poser

[Gorvacofin]

Poker Stars, $0.10/$0.25 NL Hold'em Cash Game, 5 Players
LeggoPoker.com - Hand History Converter

SB: $12.20
BB: $28.15
UTG: $25.45
CO: $25.80
Hero (BTN): $26.80

Pre-Flop: Q[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/spade.gif[/img] dealt to Hero (BTN)
2 folds, <font color="red">Hero raises to $1</font>, SB folds, <font color="red">BB raises to $3.50</font>, Hero calls $2.50,

Flop: ($7.10) 8[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/spade.gif[/img](2 Players)
<font color="red">BB bets $4</font>, Hero calls $4, <font color="red">BB bets $4</font>, Hero calls $4

Go easy on me, I'm still learning [img]/images/graemlins/tongue.gif[/img]

New table and unknown opponents. I decided to just flatcall the reraise and see the flop. My questions:

1) Should I be 4-bet shoving QQ preflop? Given the stacks, should this be my default play at a new table against an unknown opponent?

2) As played, should I be shoving the flop? Is it a bad play to flat call the flop and let another card come off?

3) Suppose I flat-call the flop and the turn blanks. My opponent shoves. Do I call?