Ok, I was bluffing..but now I actually have top pair [200NL]

[BombayBadboy]

Party Poker - No Limit Hold'em Cash Game - $1/$2 Blinds - 6 Players - (LegoPoker Hand History Converter)

Hero (SB): $260.50
BB: $233.40
UTG: $163.23
MP: $199.75
CO: $271.90
BTN: $316.74

Reads: <font color="blue">Villain is 20/16/2, not overly creative..multitabler</font>

Preflop: Hero is dealt A[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/heart.gif[/img] (6 Players)
UTG folds, <font color="red">MP raises to $8.00</font>, 2 folds, Hero calls $7.00, BB folds

Flop: ($18) Q[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">MP bets $12.00</font>, <font color="red">Hero raises to $36.00</font>, MP calls $24.00

Turn: ($90) A[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero?

What is my plan here? If I check..what to do when he bets?