It sounds like you have been pretty miserable lately! Hopefully you will be feeling better soon, but in order to figure out what might be causing your symptoms, the best thing to do is to see a physician. You have multiple different complaints that seem to have been going on for several days, and without further history and an examination, it is difficult to determine exactly what is going on. Even if you don't have insurance there are primary care clinics in Chicago, many of them affiliated with the various medical schools, who will likely be able to see you without insurance. Your symptoms of body aches, changes in bowel habits, and abdominal discomfort could be consistent with viral gastroenteritis which should hopefully slowly get better on its own. The chest heaviness and uncomfortable feeling in the back of your throat may be related to acid reflux
which can sometimes be seen in patients with viral infections of the gastrointestinal tract. It is good to know that you have not been vomiting
and it sounds like you are keeping food down, even if you don't feel well, but it will be important for your physician to also ask you about your past health history, medications, and examine you, especially your heart, lung and abdomen. Book an appointment today!