I am 26 years old and a healthy white male. About a two years ago, i woke up from a nap with a really bad headache. I was living in a fema trailer at the time from hurricane rita and i have had sinus problems with that. But lately I have been noticing that i can do the littleist things and my heart will be beating out of my chest. I have had a ekg and mri and ct and they said everything was normal. I feel like it is not normal cause i lost a little vision in my left eye and i have a pain i guess in the nerve behind my ear. Also i notice that I can be just walking around in a cool place and i will just start sweating out of no where. Something is wrong and i wish they could find out what it is before its too late. No one in my family has heart problems and some have high blood pressure but thats it. If someone could help me, please do so. Thanks