I suspect the following
1) KIDNEY PAIN
caused by stones, infection( it causes ALL THE SYMPTOMS U HAVE)
2) pain because of pathology in pancreas
3) spleen infection
4) intestinal infection or worms.
5)Adrenal gland stimulation.( it causes hot flushes and rise of blood pressure)
It is essential u must do a sonography
of full abdomen first from a good sonologist.
It is essential to also see a Consultant Physician .. FIRST