About a month ago I ended up at the emergency room because I felt extremely light headed. They did an ekg and some simple blood work and everything appeared normal.
The day after my emergency room visit I started experiencing nausea, diarrhea, and trouble focusing my vision. I had also been feeling fatigued for a week prior to my initial emergency room visit and have been feeling fatigued since.
For the past month, my vision problems have remained, I have been nauseous off and on and have had continually loose stool (although not always what I would term diarrhea). I have also had occasional chest discomfort/pains and muscle soreness, expecially in my left arm.
I have also had occasional "attacks" during which I feel light headed, flushed, have trouble taking deep breaths, and have trouble concentrating.
I've had a number of tests at this point including a CBC, SED Rate, thyroid test, and a lyme disease test. All have turned up nothing unusual.
I'm 26 years old, have never had a serious illness before, and am getting quite scared about what could be causing these problems. I am particularly concerned about heart problems or carotid artery blockages at this point, given my occasional chest pains. I am slightly overweight, but I have also bounced back and forth between weights as low as 190 pounds when I was 18 and 300 pounds when I was 23 (I am now about 230), and I'm concerned that this may have weakened my heart or that the bad foods I was eating may have raised my cholesterol levels. Any suggestions would be much appreciated.