50nl What am I beating here?

[macgyverlol]

Early at the table, no real reads. I'm wishing I had cbet looking back.

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

MP: $20.15
CO: $41.75
Hero (BTN): $69.70
SB: $53.35
BB: $40.50
UTG: $50

Pre-Flop: 8[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] dealt to Hero (BTN)
3 folds, <font color="red">Hero raises to $1.50</font>, SB folds, BB calls $1

Flop: ($3.25) 7[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, Hero checks

Turn: ($3.25) 4[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets $3</font>, Hero calls $3

River: ($9.25) 2[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">BB bets $7</font>
Hero...