Pot odds after a raise

[redbaronat]

Hi, I've just had a discussion on pot odds in the micro-limits forum and I have a question.

If i bet into a group of perople and then I get raised (on the flop say) and I think I am behind, do I include the bet I have already put in on this round as part of the pot, or do I count this as bet part of the bet I have to make?

e.g. there are 4 bets in the pot and 4 players.
I bet once and there are two callers.
The third player raises.

so, are my pot odds now 8-1 or 8-2?

red.