I got hit in the eye, at first i saw a white light like a spark, then i couldn't see clearly, and i felt bad headache in the area i got hit in..?

See your doctor: This problem can only be solved by seeing your octor and being evaluated face-to-face. After a thorough examination, your doctor should be able to tell you what's wrong and what to do about it.

Needs evaluation: The hit to the eye, caused a hit to the retina which interpreted the hit as a stimulus to the light receptors (the spark). A hit hard enough to do this should be cause for an ohthalmologist to look at your eye.