Hair Issues

About two months ago, about half of my left eyebrow fell out.  The hairs fell out, root and all; there were no pranks, chemicals, or make up involved.  They came out very easily, at the slightest tug; because they grew back and it seemed to be and isolated incident, I concluded was just stress-induced.
However, a few days ago, the same thing happened.  The hairs had grown back, luscious and healthy, and they just came out the same way as before.  Additionally, the sides of scalp, right around my temple area, are extremely sore.  Yes, I wear my hair up, but not tightly, and I have experienced that pain (of a tightened ponytail) before, which is different than this pain.  Additionally, no hair is actually coming out of my head with the gentle pull that happened with my eyebrow.  I know I really should go to a doctor, but I'm one of those people that hates going because I know it's going to lead to loads of testing, blood work, and follow up appointments, and medication isn't my thing either.
I guess I'll have to go eventually, but I was wondering if ANYONE had any clue about what could be going on with my body.  Thanks!