Dangerous Side Effects of MSG and Foods That Contain It

We ate chinese food tonight and, 3 out of 7 people at our table had a reaction to the food, we had a rapid heart beat, and this terrible tightening in our upper jaw and to our temples and also a faint light headed feeling. which caused us all to panic, I was so scared, I really though that I was having a heart attack. thought that this was very strange that we all had these scary symptoms at the same time and all three of us that had these symptoms had, eaten the same kind of soup. I will avoid MSG from now on at all costs. I was extremely scared. one of these other two people was my 16 year old son who said, Mom I think i am having a allergic reaction to something that I ate... How can we get restraunts to stop using so much MSG???
My neck still hurts even as I am writing this email, I am still shaken up as I write this.....

would eating chips cause an attack at night thus creating severe insomnia?