Hi Pandora,
Mantak Chia is one of the living masters of the school I follow, the I Yen school. His series of books, "The International Healing Tao," provides sound teaching of the progressive stages of Qigong according to that School. The I Yen School also has a website:
www.universal-tao.com
Your account indicates that you went too far and too fast, perhaps, without adequate preparation. You were like a 110V appliance receiving 220V current! The advice given here by others is correct, in my opinion. Just take it easy and focus any bioenergy you feel into the Dan Tien center just below the navel.
Clearly you have excellent natural ability to arouse and guide Qi energy. If you don't find an experienced teacher, Master Chia's books are the next best thing. But start at the beginning and learn the techniques so that you don't blow any circuits.
There are free introductory lessons on the universal-tao website.
With every good wish,
Tozan