I've read on a couple of other posts about people receiving the letter from the NVC but not receiving the NOA2, but I was curious:

When I get the affidavit of support is it supposed to be mailed to the NVC before it goes to the embassy? or is it supposed to be used at the interview? Logic says it should be sent to the NVC, but my letter says "This letter is to let you know that within a week the petition will be forwarded to the appropriate visa-issuing post where your visa interview will take place." Does this mean that the NVC forwarded my petition without the Affidavit of Support?!

My congressman's office told me they have never seen this before, but I have a sneaky suspicion they rarely know what they are talking about anyway.

Sorry. I'm really confused and worried!

NVC has very little involvement with a I-129F petition or K-1 visa... Affadavit (if required) is presented at the consulate.

What's there to worry about? You have an approved petition, NVC has received it and most likely sent it on it's way. Like FWAGUY said, the I-134 is for the interview, NVC has nothing to do with it.

Congrats! Be happy, the USCIS doesn't have it anymore.

Thanks guys, the congressman's office has no idea what is going on apparently. I'm getting all my valuable information here. He told me that it was odd for me not to have the Affidavit of Support because the NVC sends it out....He also told me that for the interview nothing was required but my fiance's passport....I think he doesn't have much knowledge on the whole thing. The only good he's doing is calling the people I cannot get through to in a timely manner. Hehehe.

Thanks!

NVC does much more for other types visas. For K-1 is mostly just a pit stop where it gets checked, assigned a new case number and forwarded on to the embassy or consulate.

^^Agreed. Your congressman is probably confusing a K visa with the IR1/CR1. The NVC is involved (somehow!) with their affidavit of support.