AA turn fold, OK?

[pfkaok]

I'm new to NL cash games. i planned to push turn or bet at least pretty good size if it comes ok. of course this is about the worst card in the deck, so is check/fold ok? not a ton of hands but player seemed tight and pretty conservative.

Party Poker No-Limit Hold'em, $2 BB (10 handed) converter

CO ($93.17)
Button ($175.25)
SB ($276.40)
BB ($197.45)
Hero ($200)
UTG+1 ($200.55)
UTG+2 ($256.10)
MP1 ($197)
MP2 ($209.51)
MP3 ($42)

Preflop: Hero is UTG with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $1.
<font color="#CC3333">Hero raises to $5.5</font>, <font color="#666666">2 folds</font>, MP1 calls $5.50, <font color="#666666">4 folds</font>, SB (poster) calls $4.50, <font color="#666666">1 fold</font>.

Flop: ($18.50) 2[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets $5</font>, <font color="#CC3333">Hero raises to $25</font>, MP1 calls $25, SB folds.

Turn: ($73.50) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP1 bets $50</font>, Hero folds.

Final Pot: $123.50