The last few days I have been having periods of over heating followed by sweating, some irritability and confusion, fatigue, inability to sleep or get adequate rest. I thought it might be acid reflux or perhaps even a possible heart attack at one point. but any chest pain I have doesn't last long but I am worried that it may be something severe. I have lost about 50 pounds over the past year on a low-carb, high fat diet. My cholesterol was around 173 last doctors visit and my blood pressure was normal. My triglycerides were a little high however. I do take a statin and lisinopril as a preventative. Thanks for your time!