You could be Anemic, as well, which is low red blood cell in the body which decreases the amount of oxygen to the bodies organs, cells, and tissues, and can cause many symptoms if left untreated, such as fatigue, weakness, shortness of breath, heart palpitations, and pale appearance of skin, mucus membranes, and nail beds. Severe anemia can cause fainting, dizziness, angina,
chest pain and heart attack.