Third Eye Awakening Help

[dshiznit6996]

I have been doing the meditations for opening the third eye and have already completed the four days, I haven't experienced anything that different besides a small pain in my head that was exceedingly worse yesterday (my fourth day). I think I may not be vibrating TH-O-TH right, when I was younger I had issues pronouncing "Th" and I think it may be affecting my ability in this specific case, I can't seem to vibrate my tongue between my teeth as described in the chakra opening section.