For the past week and a half, I have had a constant pain on the right side of my head towards the back. Everything that I have taken, from Extra-Strength Tylenol to Stanback, doesn t relieve the pain, it only numbs it to where I still know the pain is there. Just recently, I started smelling ammonia. Do you think this could be a sign of migraines or could it have to do with the fact that I am severely anemic?