it depends, can't go further without some specifics.
Yea, how have you been playing? Have you been check/raising alot of flops, betting low, then folding to a re-raise, and what reads do you have on your table. Normally, if i flop the nut flush, and i know theres players in the hand that like to bet alot of flops, ill check call or check raise, depending on the bet. With the check call, if a blank comes on 4th, ill check again, and when he/she raises, i push, if a card comes that could make a smaller hand, i may put out a small bet ( probably equal to the first bet of the last round) and hope for a re-raise, so i can push, and either double, of send the person on their merry way.