Suggest Treatment For Pressure In Head After Smoking Weed

Every time I smoke weed I feel a painful pressure in the back of my head, this pain is so unbearable that when it happens all i can do is lay down and hyperventilate until it goes away, it lasts for 10-20 minutes, stops, then starts up again. this continues for 1-2 hours or until i sleep. it is extremely terrifying and i feel like im dying, its not just when i smoke weed but smoking does make it worse