Hi I'm a 38 year old female, mother of four. I began experiencing symptoms shortly after the birth of my fourth child (via csection).my symptoms include lack of sweating (I used to sweat profusely), lightheadedness daily, taccycardia, fatigue, nausea, weight loss, brain fog, memory issues, chest discomfort, weakness... I've been to cardiologist (sinus tachycardia), neurologist (all normal), gastroenterologist (colonoscopy/gastroscopy)... It's frustrating when they all say it's all in your head or it's anxiety but I know it's not. Do these symptoms sound at all familiar to any of you? Thank you Laura