5NL: open ender u 3betanom potu vs. unknown

CO igra 21/13/5.17  Fold na 3bet: 33%, 3bet:6%  na 218 hendova; MP je tek sjeo za stol i postao BB i zato sam se odlučio 3betat jer sam mislio da ga CO izolira.  Ne znam jel preflop ok, ali zanima me jako igra na flopu. Kad sam poslije pogledo mislim da sam previše cbeto i zanima me koliko je isplativ moj call njegovog allina u 3betanom potu sa openenderom + backdorkom. Nekak mi se čini ovaj moj play pre spewy.
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PokerStars, No-Limit Hold'em Ring
Small Blind: $0.02
Big Blind: $0.05

BTN ($5.76)
SB ($12.03)
BB (Hero) ($5.27)
UTG ($7.93)
MP ($5)
CO ($4.19)

Dealt to BB (Hero)

Preflop: (Pot is: $0.07)

UTG folds, MP checks, CO raises to $0.2, BTN & SB fold, BB (Hero) raises to $0.8, MP calls $0.75, CO folds

Flop: (Pot is $1.77, 2 players)

BB (Hero) bets $1.5, MP raises to $4.2, BB (Hero) calls $2.7

Turn: (Pot is $10.17, 2 players)

River: (Pot is $10.17, 2 players)