missed the draw but hit 2pair instead

FIrst hand, no stats. Is callin that river minraise wrong?

PokerRoom No-Limit Hold'em, $2 BB (5 handed) internettexasholdem.com

saw flop|<font color="#C00000">saw showdown</font>

MP ($52.90)
<font color="#C00000">Button ($80.40)</font>
SB ($23.45)
<font color="#C00000">Hero ($100.00)</font>
UTG ($77.40)

Preflop: Hero is BB with 5[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/diamond.gif[/img].
UTG calls $1, MP calls $1, Button calls $1, SB completes, Hero checks.

Flop: ($6) 7[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, <font color="#CC3333">UTG bets $1</font>, MP folds, Button calls $1, SB calls $1, Hero calls $1.

Turn: ($10) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets $2.5</font>, Hero calls $2.50, <font color="#CC3333">UTG raises to $5</font>, Button calls $5, SB calls $2.50, Hero calls $2.50.

River: ($30) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets $18</font>, UTG folds, <font color="#CC3333">Button raises to $36</font>, SB folds, Hero calls $18.

Final Pot: $102