Is it common to feel the tight knot and pressure on the middle of your forehead hours after working on opening the Third Eye? It happened about 9 hours after I finished the meditation and it last for several minutes. Another thing is that last night I did see something really freaky and...

I started practicing the meditations yesterday (it's 1 in the morning today...Oops!), but I'm not sure if I'm doing it right. I did feel a sudden tingling cold wave start from my upper torso and ripple down to my toes for several seconds. And when I tried the beginner guide to opening the third...