Stomach pain/vomitting

I've been having episodes of nausea and vomiting for over a year.  This generally occurred only a couple of times a month.  I went to the doctor who sent me to the ER because he was afraid I had pancreatitis.  The ER said I had a virus and sent me home.  It began to get worse.  I went to my husband's GI.  He ran no tests and decided that I had a virus (this was 6 months after it all began).  We moved and the new doctor thought I had pancreatitis, too.  The ER said no and that it was a virus.  It now happens about every day that I get all hot and sweaty and then ice cold.  I begin to hurt in my stomach and then vomiting.  If there is nothing to throw up, I dry-heave till I cry from the pain.  This past weekend, I began to vomit blood.  I'm still told that I have a virus from several doctors.