Do you call or fold?

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Should you call a bet in a limit hold em game if after the flop you are getting the right odds but you know that after the turn you will not have the correct odds to call if you miss on the turn. For example, you are BB, player to your left raises there are 2 callers and you call. Flop comes you have second pair and an over card. You have 5 outs to make a set or 2 pair. Original raiser bets and the other 2 fold to you. Pot is offering you 9:1 to call and your odds against making the hand on the turn are 8:1 but if you don't make it on the turn and your opponent bets then you are only getting 6:1 to call. Should you consider the fact that after the flop your odds of making the hand on one of the next two cards are 4:1 or do you make your decision based on the odds on the turn and then the river.