Any Clue to what my problem is?

[Momoftwo164]

I'm not sure where I need to post my question but the last doctor I saw was a Neurologist and he found out how to get rid of the pain.  4 years ago my legs started to cramp up, like a Charley horse but it went all over the fronts and backs of my legs.  In the course of 4 months it grew so strong and far that it affected both legs, arms and back to the point I was unable to walk or carry anything.  I did new tests twice a week for 4 months starting with simple vitamin deficiency to MRI and spinal taps.  They found nothing out of the ordinary.  According to my tests I was healthy as could be.  Well I finally met a neurologist that put me on Nerotin and I was taking 11 pills a day to control the pain.  It finally went away.  

To this day I can't stretch my calves or they will instantly Charley horse up.  Maybe twice a week for two days my legs will give me bad cramps not enough to keep  me off my feet but to just be in pain.  The last two weeks it has been slowly getting worse and today no position or thing I did helps with extreme pain its giving me.  I have to crawl to get around and my calf feels very hard (I'm guessing from it being tense?) on top of that my foot is becoming numb and tingly.  I figure that is simply from the way my muscles are reacting.

History about me, I'm very active and in shape.  I have given birth twice with no complications and don't do drugs.  All my levels of vitamins are where they should be and I eat very healthy.  What could be wrong with me?  Please I'm dieing to figure this out at least giving it a name.  Doctors have ruled out fibra myalgia and MS.  Thank you for your time.