Pocket pair on a monotone flop

[Rocco]

Small buy-in tournies ($10 and $20) on Party. Twice today I've raised a good amount on the flop, once with KK and once with JJ, only to see a monotone flop. In both cases I've had the represented colour in my hand, so another card of that colour gives me nut flush (or at least close to).

What's the general line here when it's folded to you. Your remaining stack is equal to or smaller than current pot size. Opponents have you covered, but their stacks would be severly crippled having to face an all-in by you? Do you check and give up or go all-in?