Feeling sick?

Anyone else just feel tired and sick? Last week my doctor said I had a stomach bug, I was having intense abdominal pains and ended up becoming dehydrated causing me to contract. I was given a liter of fluids and felt a little better. The stomach pain had started to go away and now it's back, this time with diarrhea (sorry tmi). I'm just so tired and done with feeling sick, most days I don't go to work. I just don't know what to do anymore.