I am having serious condition since 15-20 days like whenever I eat I feel uneasy and chill with extreme fatigue , I feel a sensation of nausea too, my appetite is also fluctuating, like one day i feel hungry other day I don't feel like eating, along with constipation and burping and semi liquid brown stool.... generally  these symptoms occur in morning and usually in sunny days.Recently i had a sore throat that lasted for one month,