CO: 129.5 BB (VPIP: 44.68, PFR: 34.04, 3Bet Preflop: 7.69, Hands: 48)
Hero (BTN): 112 BB
SB: 100.5 BB (VPIP: 32.81, PFR: 25.78, 3Bet Preflop: 6.98, Hands: 133)
BB: 32.8 BB (VPIP: 50.00, PFR: 12.50, 3Bet Preflop: 0.00, Hands: 8)
UTG: 116.1 BB (VPIP: 24.00, PFR: 12.00, 3Bet Preflop: 0.00, Hands: 25)
VI: 110.9 BB (VPIP: 12.50, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 8)

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has Ad Qs
fold, MP raises to 4 BB, fold, Hero raises to 12 BB, fold, BB calls 11 BB, MP calls 8 BB

Flop : (36.5 BB, 3 players) 5h 2s Ac
BB checks, MP checks, Hero bets 17.5 BB, fold, MP calls 17.5 BB

Turn : (71.5 BB, 2 players) As
MP checks, Hero checks

River : (71.5 BB, 2 players) Kc
MP bets 81.4 BB and is all-in, Hero calls 81.4 BB

So this is a hand I played recently. I 3bet AQo from BTN and get two callers. I bet flop and decide to check turn behind. Vi jams river for a small over bet. He is a unknown player never played with him. I am mainly concerned he has a boat here but since he is OOP I reckon he would be folding hands like 22/55 I am also sure that he would jam AK so I rule that out too. So what beats me is 22/55 and 43. Should I be folding on river in this spot? How does my bet sizing looks? Was it ok to check back turn? Thanks in advance ! Roy