not enough sleep ,too much study.Are you having sinus problem,your nose.block.Besides.taking paracetemol ,try get get some ginger drink,drink it warm.
Usually headaches come from poor blood circulation,try massage your neck,turn to the left and right many times,up and down and also massage your temple,left and right.Your temple is just above your ear,slightly nearer your eye.Hope u get better soon,take alot of warm water for blood circulation