Constant Nausea

Hi everyone,

For a long time now I have had nausea, but usually it's triggered by drinking cold water first thing in morning or something else specific.
But for a few weeks now I have it constantly, I have not vomited yet. But I'm always feeling sick. The only thing that helps even a little is eating. So I wind up nibbling on food all day. :(

Anyone else ever have this? Any clue what it could be?

Thanks
Cindy