No reads on this guy at all. He had sat down 2 hands before this came up. Thought he might be a weaker player coz he limped in late position. rest of the people in the hand all very stationey which is why i didn't raise. Should i have bet this turn? Can i ever call this bet?

Button ($28.70)
Hero (SB) ($52.30)
BB ($55.85)
UTG ($53.51)
MP ($71.45)
CO ($50)

Preflop: Hero is SB with As,Qs
1 fold, MP calls $0.50, CO (poster) checks, 1 fold, Hero calls $0.25, BB checks

Flop: ($2) Ks, Js, 3d (4 players)
Hero checks, BB bets $1, 1 fold, CO calls $1, Hero raises $5.60, 1 fold, CO calls $4.60

Turn: ($14.20) 6d (2 players)
Hero bets $11.80, CO raises $43.80, Hero ???? 34.30 left