Ok ive experienced these things & i've done some research & i blieve i can help you! do you mind answering a few questions so i can understand what your body is doing? They are: how is your weight,do you know your heart rate - pulse & blood presure, are you on any suppliments & hows the stress in your life. I believe you are out of balance with your minerals & these things will be an indicator of what minerals you might need. There is a site you should go to: ithyroid.com even though you might not have a recognised thyroid illness, it is still good to help you understand how these minerals interact in our bodies.Any thing else you have as a symptom could be usefull as well.
I hope i can be of assistance to you.