i know what u mean
i didnt stop shaking till the next morning once
kundalini is very powerfull
the serpent is at the base of ur spine
u gotta be receptive and know that some confusion can come because it is removing all of the bad negative energies
it cannot do that without some disruption
ive got searing heat in my spine right now
i do meditation of many types and release the kundalini at times and others sooth myself to cope with it i guess hahaha
the rewards are much more greater that the sacrificies throughout
good luck