Kind of a complicated situation....I got my B-2 stamped for 10 years in 1999. Then a few months later, came to the U.S. on a F-1. Upon graduation, I got a job who sponsored my H-1B. I'm wondering if my B-2 is still valid. Because I hate my job and want to quit but still be able to stay in the U.S. for another 3 months or so. Is this possible? Thanks.