I feel like my body is shutting down, always feeling tired and lots of joint/body pains.
What is wrong with me?

you're suffering from anemia ,you have to see the doctor
Anemia that is when the number of red blood cells or concentrations of hemoglobin are low a person is said to have anemia. Hemoglobin is a protein (metalloprotein) inside the red blood cells that contains iron and transports oxygen.
This product will help you plus the doctors treatment

http://prevetion.blogspot.com