200NL AK K73 getting donkbet at twice

[Pieter86]

Everest Poker No-Limit Hold'em, $1.00/$2.00 (HH Converter by Kreatief)

BB ($195.00)
MP3 ($236.85)
CO ($228.10)
Button ($184.65)
SB ($241.73)

Preflop: Hero is MP3 with K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img]
<font color="#666666">1 folds</font>, <font color="#CC3333">Hero raises to $7.00</font>, <font color="#666666">1 folds</font>, Button calls $7.00, SB calls $6.00,

Flop: K[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] ( $21 )
<font color="#CC3333">SB bets $23.00</font>, Hero calls $23.00, <font color="#666666">1 folds</font>,

Turn: 6[img]/images/graemlins/club.gif[/img] ( $67 )
<font color="#CC3333">SB bets $69.00</font>,

Should i have raised the flop? I had the feeling everything cept sets would fold then..
On the turn I got lost and folded after thinking for a while and realising I didnt wanna play for stacks here... Would anybody call or raise the turn?

Villain is 31/13/2 over 60 hands we haven't clashed,