(Sorry should be in HH section)

I hate min-raises and I wasn't quite sure what to do. Is my pre-flop not high enough? I want action but I'm worried that too big a raise gives me away. Push or fold?

Party Poker No-Limit Hold'em, $ BB (9 handed) FTR converter on zerodivide.cx

Hero ($63.25)
Button ($57.60)
SB ($53.90)
BB ($50.90)
UTG ($50.70)
UTG+1 ($48.85)
MP1 ($55.85)
MP2 ($49.65)
MP3 ($48.75)

Preflop: Hero is CO with A, A. SB posts a blind of $0.25.
UTG calls $0.50, UTG+1 raises to $2, 1 fold, MP2 calls $2, 1 fold, Hero raises to $5, 2 folds, BB calls $4.50, UTG folds, UTG+1 calls $3, MP2 calls $3.

Flop: ($20.75) T, 3, Q (4 players)
BB checks, UTG+1 checks, MP2 checks, Hero bets $15, BB raises to $30, UTG+1 folds, MP2 folds, Hero ?????