For some reason my head will hurt either on the side or on the back as is someone just hit me. Can there be something wrong?

For some reason my head will hurt either on the side or on the back as is someone just hit me. Can there be something wrong?
Hmmm... maybe you should get a doctor to check your blood pressure. I had a friend who had similar pains which turned out to be caused by some herbal vitamin pills which raised his blood pressure. Even if it turns out to be nothing, if it's worrying you, you should see a doctor.

Any headache that's sudden and unexplained should be looked at. A really bad thing could be an aneurism. Get it checked out.