so i dont know, maybe this is a standard spot but i was really confused at the last street what to do cause of the check back from my weak opponent, should i just check call because of my week kicker or just go for straight value and hope he dont raise me, well i decided to bet for value anyway her because i thought he could have some week Jx or a 9x he possible could snap me off with it, then when he raises me what should i do? just muck or really consider a hero call? or should i have played the hand in any other way?
otherwise i didn't have any specific reads on my opponent because of it was to early into my session.
for u guys who think stack sizes and so are weird, dont worry, because it is from a Swedish site so its not USD but close to same value
sorry for bad English also

http://www.handconverter.com/hands/2849206

CO: $35.60 - VPIP: 33, PFR: 4, 3B: 0, AF: 3,1, Hands: 54
Hero (BB): $51.93 - VPIP: 30, PFR: 26, 3B: 12, AF: 3,5,

Pre Flop: ($0.75) Hero is BB with A of clubs 8 of spades
1 fold, CO calls $0.50, 2 folds, Hero raises to $3, CO calls $2.50

Flop: ($6.25) J of hearts 9 of diamonds 3 of spades (2 players)
Hero bets $4.68, CO calls $4.68

Turn: ($15.61) 6 of clubs (2 players)
Hero checks, CO checks

River: ($15.61) A of diamonds (2 players)
Hero bets $11.70, CO raises to $27.92, Hero ????