Symptoms

Some body symptoms are serious warnings that may need immediate care.
Source: (Jeanie Lerche Davis, WebMD)

1.   Unexplained weight loss and/or loss of appetite
If you are eating the same way and either of these occur, you could have a serious problem--including ovarian cancer which can cause swelling of the abdomen.  Just see your doctor to be sure.

2.  Slurred speech, paralysis, weakness, tingling, burning pains, numbness, and confusion 
Signs of a stroke.  See your doctor immediately to be sure.

3.  Black, tarry stools
This could be a sign of a bleeding ulcer or cancer in the intestine.

4.  Headache with a stiff neck and fever
These could indicate a serious infection called meningitis which can cause scarring of the brain.  See your doctor immediately.

5.  Sudden agonizing, crushing headache
If this headache is more severe than one you have ever felt before, this could possibly be from a brain aneurysm.  If treated before it bursts, it could save your life.

6.  Lump in testicle
A lump in the groin could indicate testicular cancer.

7.  Dark yellow urine

This could be a sign of dehydration.  Drink more water and see your doctor.

Your body speaks to you--please LISTEN!  Always see your doctor immediately and tell him your symptoms and let him know that you want to rule out the possibility of a more serious illness.