Very good advice from apatride!
Also, make sure you ground, walk, eat heavier, stay away from spiritual things (book, music, videos), get a massage, talk to friends, keep your mind busy and off the symptoms, don't focus on the energy,ecstasy, burning... keep yourself and your mind busy.
What you feel is very normal, and like Apatride said, it shows than things are working. The heat is nothing to worry about, nor is the ecstasy... people work for years to experience those things. What you have is a gift (you know it is shakti/Devi/the goddess coursing through you that is making you feel this)... don't ruin it with fear. Fear is the hardest thing to get over. Accept it as a gift and do whatever you can to ground.
What you experience is new to you, but it is perfectly normal and actually a good sign. It will not cause you any harm, unless you keep practicing and pushing the energy... which you are not.
Please Digofarias, don't be scared. It is OK. We would have told you if things were really bad, but what you experience is not bad... please put your mind at ease and do whatever is needed to ground. Also the fullmoon is this weekend, it generally increases energy levels, so stay away from any energy practices till the full moon passes.