PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($74.80)
UTG ($18)
Hero ($102)
CO ($66.15)
Button ($27.15)
SB ($111.45)

Preflop: Hero is MP with Q, A.
1 fold, Hero raises to $3.5, CO calls $3.50, 3 folds.

Flop: ($8.50) 2, 5, T (2 players)
Hero bets $5.5, CO raises to $17, Hero ???

----

Villian is 17/11/1.2 over 34 hands.

What's your move here?