Just wanted to chime in...other people have said it already, but I'll say it too: there is absolutely nothing wrong with you - your feelings are very normal.
I got out of school a few years ago, and I'll tell you that my sophomore year was hellish, too. Nothing seemed to make sense and I felt very distraught.
It's good that you're exercising, keep it up. That will help you from sinking in too deep.
It does sound like you're at a real crossroads. You're seeing the limitations of what your parents handed down to you, but it's hard to know what to do instead.
I'm not Indian, but I know how you feel about family pressure...it's one of the most miserable things to be going through. I won't say "tell your family to get lost", because that's pretty hard for most of us to do. But, I can tell you from my own experience that it IS possible to love your family very much without living up to all their expectations. At times, it may look and feel like you're breaking hearts - and you may be - but it's well worth it in the end. That's been my experience.
It's easy for me to wax poetic about things you may not read, so feel free to drop me a line if you want to chat. It's this username at a well-known mail service provided by Google. :)
Be optimistic - always be positive! If you feel that good things are about to happen to you, they will.