tell me more about this shocking over your body feeling
Definitely go see that neurologist. And possibly a pulmonologist as well. You need to get checked out for Multiple Sclerosis.
If they can't figure out what's wrong with you, it's a long shot, but you could also get checked out for Lyme Disease. While your collection of symptoms isn't typical of Lyme, every patient is different and all of your symptoms could possibly be caused by Lyme.
You can read a thorough symptoms list in this document:
http://www.ilads.org/lyme_disease/B_guidelines_12_17_08.pdf
Good luck!
Im no doctor but it seems to me you may be having seizers im 22 and have had black out spells every once in a while and my body spasems. The tightening in your chest could be a mild heart attack it happens to many.. When you lay flat and you get to where you cant breathe and when you walk slow their could be an abscess in your lungs or arround your heart. and when you get the shocking feeling all over your body it is probly your nervous system which commonly leades to your brain. Mabey seeing a neurologist would be best for that. But i have never herd anything like your symptoms but i will look into it more and see if i can help you out more.
I hate to say this but it could be heart failure you seem to have all the symptoms or it could have lung desease something to do with your lungs if you cough,chest pains,gaining weight, swollon,chest pains and ect... I would run this across to my doctor! I hopem and pray for you and wish you luck