Is this Kundalini?

Kundalini awakening is the phenomenon that your life force (chi, ki, prana) is raising up the spine and up to your brain. When this happened, it supposed to clear up your channels, fill your body with energy and some says it can bring enlightenment? I am not an expert in Kundalini but you can google it up. There is so much information available online nowaday. I just want to share with you my experience and wonder if this is what Kundalini feels like.

You see, about a year ago I was practicing some intense chi-kung training. I was doing 20 minutes to 40 minutes sesssion a day and was doing that for about 3 months. One day while doing standing chi-kung, I felt a very strong force of energy starting from my Hyu-In point (the area between the anus and the sex organ) going up my back. Actually not one force but two, like two snakes coiling up from the root of my spine, each one twisting from one side of the back to the other, always opposite each other. They moved up the spine, twisting and turning my back. While they were going up my back, there was another force going straight up from the bottom of my back, up the spine, really really strong. It went up about half way of my back and like hitting a road block, it slammed onto it and stopped. When that happened, I felt like there was a jack hammer that shooting up half my back and hit a complete stop, so powerful, so strong. I got scare so I stopped my chi-kung practice. I went and lie down on my bed and the same snakes-coiling-up-my-back happened again, as strong as it was before, but I did not get that jack hammer feeling again. Too bad my taichi teacher was in China at that time so I could not ask him or ask for help. I asked a couple senior student in my taichi class and they could not explain it. Nobody has experienced anything like that. One guy suggests it might be some form of kundalini. That's how I learned about the word kundalini. The senior students told me to take it easy and wait for teacher to come back from China which I did. I stopped doing intense chi-kung training and waited for him. When he came back, 3 or 4 months later, when I asked him about it he said something happened too fast and he think I need to slow down. Not sure if he made any adjustments to my channels or not but I have not experience that anymore. Anyway, that was really interesting and a little bit scary when it happened. Well, I guess learning chi-kung has its moments.