Been Throwing Up. Ache All Over. Bad Taste In Mouth.

Been throwing up. Ache all over. Bad taste in mouth. Head hurts. A diabetic. No appetite. Went thru this twice about 3 weeks ago. Went to Dr. When it was almost over. Was dehydrated. Got fluids. Did a stool sample and blood work. Everything was ok. His red cells was off but after fluids it was better. Now 3 weeks later sick again.