I have been feeling tired,even when i wake up in the morning. for years now. I have no appette. Im underwieght. I cant concentrate.get lost in my sentences when I speak. My memory is really bad,I loose things all the time. I get hot at times,like a hot flash. I get cramps in my feet. My heart pounds. My heigth his 5 5 I weigh 95 pounds. Im 59 years old Ive always been slim all my life,just not like this. Medical history. I use to get alot of uninary infections. I always had low energy as a child but not like this. All doctors ever did would give me the basic blood test thyroid, anemia, sugar. I do have low blood pressure at times,reaaly low,but no concern has ever been mentioned. I really hope someone can help me.