I have never really had hiccups. Suddenly I am having them very frequently. They are violent hiccups that take forever to end. They make my lower chest and stomach hurt. I also get light headed and sometimes sick when I have them. I don't know if this has anything to do with it, but the last couple of weeks my stomach has hurt (not too bad though) and I've had a loss of appetite, which all started about the same time as the hiccups. Any advise?