Hi, dhav,
Whatever happened to me--Kundalini rising, psychic awakening, whatever--was spontaneous. I'd never done any yoga or meditation or anything remotely like it before. Honestly, I had all these "symptoms" going on, so I just Googled a few of them together, and got taken right to sites about Kundalini (which I'd never even heard of before--or if I had, I had ZERO idea what it was!).
I've had little-to-no physical discomfort, aside from some heart palpitations (closer to the beginning), a few bouts of throwing up all night, and a little dizziness sometimes. The physical sensations were/are mostly WONDERFUL. Most of the rest has been visual, along with the synchronicities, occasional apparent clairvoyance, and just plain everyday chatting with spirits!
My blog talks a little bit about how it all started for me, if you want to take a look there. Also, two sites I've mentioned elsewhere here, which have been a lot of help to me (especially at the beginning), are these:
kundalini-teacher.com and
elcollie.com/st/st.html
Good luck with it--I wouldn't give up even the most unpleasant moments of it for the world!
Doe