Anemia signs and symptoms vary depending on the cause and severity of anemia. Depending on the causes of your anemia, you might have no symptoms. Signs and symptoms, if they do occur, might include: 
Fatigue
Weakness
Pale or yellowish skin
Irregular heartbeats
Shortness of breath
Dizziness or lightheadedness
Chest pain
Cold hands and feet
Headaches
 At first, anemia can be so mild that you don't notice it. But symptoms worsen as anemia worsens.