Must fill-up?

[Warpe]

I've flopped a set but we're looking at monotone, so I raise villain's flop bet to see if I can push him off . He insta-calls. The turn's a brick but villain leads out for a little under the half the pot, so I've got to start thinking he might have flopped a made hand. The only set I've got to be worried about is 88, but I think the flush is more likely. Your line? Fold this down on the turn or keep going and hope to fill up? (and, before you say it, my chip top-up was enroute)

Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
9 players
Converter

Stack sizes:
UTG: $31.05
UTG+1: $44.70
MP1: $40.50
MP2: $22.50
MP3: $12.85
CO: $28.70
Hero: $20.58
SB: $34.20
BB: $28.20

Pre-flop: (9 players) Hero is Button with 2 2
3 folds, MP2 raises to $1, 2 folds, Hero calls, SB calls, BB calls.

Flop: 3 2 8 ($4, 4 players)
SB checks, BB checks, MP2 bets $1.5, Hero raises to $5, 2 folds, MP2 calls.

Turn: 6 ($14, 2 players)
MP2 bets $5, Hero ???

[jackvance]

Easy call, you have 10 outs to a boat or a little under 1/4. I'm thinking you're up against a made flush here btw. Or maybe it's just an overpair.

[Lukie]

Raise the flop harder.

Call the turn.

[Warpe]

Raise the flop harder.

By how much?

BTW, I called, board paired on the river, it all went in and I doubled up off the nut flush.