It sounds like you have had a significant and rather dramatic change in your health with this new constellation of symptoms. There are many different things that could be causing your symptoms, and in this situation you should definitely see your primary care physician
as soon as possible (an urgent care visit if necessary). It will be important for your physician to hear all the details of your story, examine you, consider your prior health history, and then likely check some basic laboratory tests to begin to identify what might be causing your symptoms.
Among other things, abdominal pain
with fevers and vomiting
can be caused by a problem with the stomach, liver, or gallbladder. Given that your symptoms have persisted for more than a few days and you are noticing some changes in your urine, it is possible that your liver is not functioning properly and some of the chemicals it normally excretes (bilirubin) are causing some changes in your urine. A problem with your liver can be excluded by checking your labs. In addition, if you have not been able to keep food or fluids down, you may also have some electrolyte abnormalities that are contributing to your symptoms.
Hopefully you'll be feeling better soon, but to protect your health it is important to see your physician as soon as possible!