What you want is a plant that is predominantly indica. The reason you got a headache before was because you smoked a bud that was a sativa which gives you a head rush (I don't like the high goes throughout your body and i felt like my head was going to explode one time which was scary. You want white widow,aurora indica,white rhino,snow white. These give you narcotic sedative effects and make you feel stoned. I love smoking indica cause my eye lids get really chunky and swollen lol and my face gets numb.

__________________
Wealth is of the heart and mind not the pocket.