I ve been getting headaches at the back of my head and behind my ears for a while and they ve been getting worse. My ears pull backwards as well. A couple of days ago, when I had a really bad headache, the muscles in my leg kept going tense for a few seconds. Then, today I had another really bad headache and the muscles in my legs, arms, chest and back kept going tense for a few seconds then releasing. Do you know why that could be?