I Have Been Nauseous Every Time I Eat For The

I have been nauseous every time I eat for the last 2 weeks. As soon as u eat I'm sick for a day or so afterwards. I have only ate soup not meats or anything and now broth not helping. I'm now swelling in feet ankle and legs,eat maybe every 2-3 days, stay tired and weak. What should I do since doc can't see me for another 2 weeks?