Pull In Solar Plexus During Grief Periods
 

I notice that happens to me, and I don't have a memory of when this used to happen to me so I was just curious; why do I feel a pull in that area when I guess I miss somebody?

I think the solar plexus is transmuting energies.(a property of fire).
When you're in love,you feel butterflies in your stomach.When you fear,you feel it also in the stomach.(like a punch)

Seems like it takes your energies and 'changes' them according to your emotions and other factors as well.