I came to the USA on a J1 visa initially as an au pair. I then left back to Brazil and received a b2 visa. I married a Venezuelan in the US but he was not yet a US citizen, That marriage ended in divorce before my b2 visa expired. I then married an USC in 2008, but my b2 visa expired in 2011 and we never filed anything, We have been married for seven years and have four children together, not sure how to proceed through this long and expensive process.We don't have bank accounts and i am a homemmaker while my husband works,