TPNK face flop reraise

[newdriger]

Villian sometimes did bet flop with nothing while all check to him. Hero did 2-3 times 15XBet pf at SB while many limpers... That's all info I knew. Comments on this hand pls.
Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
6 players
Converter

Pre-flop: (6 players) Hero is BB with 7[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/spade.gif[/img]
UTG folds, UTG+1 calls, CO (poster) checks, Button folds, <font color="#cc0000">SB raises to $1</font>, Hero calls, UTG+1 calls, CO folds.

Flop: 4[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/heart.gif[/img] ($3.25, 3 players)
SB checks, Hero checks, <font color="#cc0000">UTG+1 bets $1</font>, SB folds, <font color="#cc0000">Hero raises to $3</font>, <font color="#cc0000">UTG+1 raises to $5</font>, Hero ??? what's your plan on turn, river?