I suddenly started having sharp shooting pains on the left side of my head. They come out of nowhere, last for only about 2 seconds, but when it happens I can feel it radiate to my left eye/left side of my face. They come and go every 5-10 minutes. My head involuntary twitches because it is so sudden and sharp. Just becoming very bothersome and worrying me. No blurred vision , nausea , vomiting , etc..