NL2 KK - A on the Flop

Please review my actions, thanks.

PokerStars - $0.02 NL - Holdem - 9 players
Hand converted by PokerTracker 4

UTG+1: $1.33
UTG+2: $3.98
MP: $1.73
MP+1: $0.68
CO: $6.90
BTN: $2.00
SB: $1.82
Hero (BB): $1.95
UTG: $2.00

SB posts SB $0.01, Hero posts BB $0.02

Pre Flop: (pot: $0.03) Hero has K:club: K:spade:

UTG raises to $0.08, fold, UTG+2 calls $0.08, fold, fold, fold, fold, SB calls $0.07, Hero raises to $0.20, UTG calls $0.12, UTG+2 calls $0.12, fold

Flop: ($0.68, 3 players) 8:heart: A:heart: 9:diamond:
Hero checks, UTG checks, UTG+2 checks

Turn: ($0.68, 3 players) 5:spade:
Hero checks, UTG checks, UTG+2 checks

River: ($0.68, 3 players) 4:heart:
Hero checks, UTG checks, UTG+2 checks