should i have laid this hand down?

[jac99]

PokerStars No-Limit Hold'em, $0.02 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP3 ($5.15)
CO ($4.52)
Button ($4.52)
SB ($4.63)
BB ($1.11)
UTG ($2.42)
UTG+1 ($7.23)
MP1 ($5.19)
Hero ($7.63)

Preflop: Hero is MP2 with 7, 7.
[color=#CC3333]UTG raises to $0.04</font>, UTG+1 calls $0.04, [color=#666666]1 fold</font>, Hero calls $0.04, [color=#666666]3 folds</font>, SB calls $0.03, [color=#666666]1 fold</font>.

Flop: ($0.18) J, 9, 7 [color=#0000FF](4 players)</font>
[color=#CC3333]SB bets $0.2</font>, UTG folds, UTG+1 folds, [color=#CC3333]Hero raises to $0.6</font>, [color=#CC3333]SB raises to $4.59</font>, Hero calls $3.99.

Turn: ($9.36) 6 [color=#0000FF](2 players)</font>

River: ($9.36) K [color=#0000FF](2 players)</font>

Final Pot: $9.36

Given the level I'm playing I didn't put my opponent on much. I was hoping 2 pair (or less likely an over pair). I realize that with bottom set there isn't much that I can beat, but given the level of competition I'm not sure if my play was correct.
What do you think?