I feel dizzy all the time, have fatigue, shortness of breath. My blood pressure is 87/45. I am also sensitive to cold. I barely feel thirst at all. I gained 65lbs in just 3 years after I had a child, I weight 187lbs. I can t exercise for a period longer than 15 mn at a time because I will feel tired and shortened of breath and start coughing. I used to be very active woman before. I don t smoke nor drink alcohol, I eat a balanced diet and get my vitamin supplements daily. I have an appointment with my primary doctor next week. I just want to know what can be the cause of my symptoms, and what questions should i ask my doctor. Thank you!