hey, sathi :
don't worry?
first try 2 convince your parents if they are not,
marry on your own.
And how come saha gotriya means marrying sister that;s BS..
I have almost 4 friends who ended up marrying saha gotriya.
don;t worry 2 much on this thing .
You need to go to 19th century to find relationship with some1 in same gotra ..
Take care and take it easy .. :D