What am i doing?? is this bad?

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) FTR converter on zerodivide.cx

Button ($8.85)
SB ($11.90)
Hero ($25)
UTG ($5.70)
UTG+1 ($13.90)
MP1 ($13.05)
MP2 ($21.95)
MP3 ($9.05)
CO ($25)

Preflop: Hero is BB with 4:heart:, 4:club:. CO posts a blind of $0.25.
UTG calls $0.25, 1 fold, MP1 calls $0.25, 1 fold, MP3 calls $0.25, CO (poster) checks, Button calls $0.25, SB raises to $1, Hero calls $0.75, UTG calls $0.75, MP1 calls $0.75, MP3 folds, CO folds, Button folds.

Flop: ($4.75) 3:heart:, 2:diamond:, 6:spade: (4 players)
SB checks, Hero bets $2, UTG calls $2, MP1 calls $2, SB calls $2.

Turn: ($12.75) 9:spade: (4 players)
SB checks, Hero checks, UTG bets $2.7 (All-In), MP1 folds, SB calls $2.70, Hero calls $2.70.

River: ($20.85) 2:spade: (3 players, 1 all-in)
SB checks, Hero checks.

Final Pot: $20.85

preflop call is fine, flop raise is ok - i probably would have just check/folded. Fold to the turn AI.

check fold the flop, you're at a table of calling stations, don't be trying to steal pots. If not the flop then DEFFINITLY fold the turn. Your hand is weak.

Yeah I figured I should have folded. But I didnt and I got really lucky.

I cant remember what they were holding, but Im sure one was on a straight draw, I think the other had AJ or something. I was shocked that I won that hand. Thats a damn big pot to win with a low PP.