I'm sorry that you are feeling so badly. These symptoms are quite concerning, and they definitely need to be checked out by a doctor
as soon as possible. I would recommend either going to an emergency room for rapid evaluation or booking with your primary care doctor
Blood in the stool and vomit could be caused by a number of things, including infections of the intestinal tract, constipation, etc. However, the most serious and life threatening cause of blood in the stool and vomit is an intestinal bleed, and this is what needs to be ruled out right away. If there is any evidence of a bleed, which your doctor should be able to tell with a physical examination and some basic blood work, it may require hospitalization, so that your blood counts can be watched closely, you can be started on medications to suppress acid production in the stomach, and you can have urgent evaluation by a gastroenterologist
. The blood in your urine is harder to tie in with the other symptoms, but I wonder if you might just have blood mixed in your urine because of the blood in your stool.
Book an appointment with your doctor immediately.