Headache due to hairs movement

I'm 21 yrs old girl.
From few days i'm having quite different type of a pain in my head whenever i move my hairs in different directions. i mean generally we tie them from forward to backward. so whenever i try to do them upside down or something...i feel pain in that area.
And i have felt this type of pain 2 yrs back also.
please can some one suggest me why this is happening.
Regards.