PokerStars No-Limit Hold'em, $1.00 BB (5 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($172.55)
UTG ($98.90)
Hero ($91.50)
Button ($100.95)
SB ($80.40)

Preflop: Hero is MP with K, K.
1 fold, Hero raises to $4, 1 fold, SB calls $3.50, 1 fold.

Flop: ($9) 3, 9, 7 (2 players)
SB checks, Hero bets $7, SB raises to $14, Hero raises to ??


How much do you raise here? To $42? This is a flushdraw 95% of the time at this stake. I see it soooooooo much