Yogani recommends (and, I believe, practices) tai-chi. One useful move, borrowed from tai chi, is to stand with legs slightly bent, much weight in feet (and awareness of the point just above the center of the foot), with arms extended parallel in front of you with palms facing each other. Visualize a ball between hands (and connect it with the point of your navel). And fill that ball with energy.
If you have feelings of constriction in head (especially forehead), visualize your mental energy extending freely outside the skull. I.e. let it all hang out. Be careful not to visualize this around the crown (top of the head), though!
If it keeps worsening, here's a useful rule of thumb. Think of everything that makes you feel "spiritual" (certain music, people, activities). And avoid them for a while. When my kundalini first awakened, I made error of going to an art gallery that week. The most beautiful paintings caused me some serious pain...just more overdoing! Was pretty difficult to explain to the person I'd gone with....