MAN I am dying to go to USA and you are crying there ? In fact you are very lucky ! You should enjoy.
You had a great opportunity to stay and work in a different culture. You can learn a lot there. The temporary phase you are not on project will definitely go. Best try to utilize this time in studying. Since later once you get on project, you won't find time for study.
Alternately try doing these things.
* Learning cook food. (every one needs to before going to US- I had started learning.)
* Learning American accent (American English)
* Learning things about the new culture (just by observation)
* other entertainment which is possible for you.
In fact I strongly feel that what�s the point in staying in the same country (India) all our lives, we should go and look the world outside as well.