I so should not have called the river...I have been trying to lead out aggressively with pocket pairs like this, betting the flop as if I have a set, which works a decent portion of the time when everyone folds. My problem is the next two streets when someone calls the flop. How should I have played this?

Poker Room skin
No Limit Holdem Ring game
Blinds: $0.25/$0.50
9 players


Stack sizes:
UTG: $16.75
UTG+1: $66.25
MP1: $88.50
MP2: $17.55
MP3: $62.70
CO: $42.50
Hero: $48.50
SB: $37.85
BB: $50.10

Pre-flop: (9 players) Hero is Button with
UTG calls, 4 folds, CO calls, Hero calls, SB calls, BB checks.

Flop: ($2.5, 5 players)
SB checks, BB checks, UTG bets $1.5, CO calls, Hero raises to $5, 3 folds, CO calls.

Turn: ($14, 2 players)
CO checks, Hero checks.

River: ($14, 2 players)
CO bets $5, Hero calls.

Results:
Final pot: $24
CO bet 10.50 collected 23 net 12.50 shows Ac Kh