KP, what you experienced was a rush or surge of Kundalini that you were unprepared to deal with. Your descrptions of the pain of blocked chakras and sudden intense heat argree with descriptions by other people.
This is one reason why many Indian yogis and swamis caution patience when practicing yoga. It also explains why so many easterners believed that most westerners were not ready to learn the secrets of yoga. I am not attempting to scare or discourage you. Meditation on cleansing and clearing the 7 major chakras is a Very Important step in controlling kundalini. It is for this reason that most experts agree that a slow and steady approach is most effective.
This is one reason why many Indian yogis and swamis caution patience when practicing yoga. It also explains why so many easterners believed that most westerners were not ready to learn the secrets of yoga. I am not attempting to scare or discourage you. Meditation on cleansing and clearing the 7 major chakras is a Very Important step in controlling kundalini. It is for this reason that most experts agree that a slow and steady approach is most effective.