Dont worry my friend. It will all turns out well. Just dont hegitate to talk. Atleast have an idea of what they are talking about. Only way to overcome is to know what they are talking about. Be frank but dont be stupid. If you dont have anything to talk smile . Fake it untill you make it. Talk like you know. Research on anything that you feel like you dont have a clue.

I had a same situation a couple of yrs back , was never exposed to a corporate world and all of a sudden i am surrounded by bunch of business project managers and operatrions manager . They were talking as if its nothing and me :( was hoping to understand a word from them so i can atleast have an idea of what they were talking about. I think this happens to everyone. Especially when they want your opinion and you feel like $hit.

My advice. Stay on top of it. Research. Dont hegitate to speak but speak right. Good luck.