Hello and welcome to HCM, Heavy periods can lead to iron deficiency and thus anemia. Intake of iron supplements will correct the iron deficiency state. At this point of time, I suggest you to get complete hemogram done to determine the hemoglobin. If hemoglobin is still low, you need to get other investigations like colonoscopy as suggested by your doctor to rule out any bleeding lesion in the large intestine. Anemia is associated with body aches, tiredness and generalized weakness. Thus, it needs to be confirmed that the pain in chest, arms and legs is not due to anemia. Once this is ruled out, other causes of pains needs to be ruled out. Chest pain needs to be assessed with caution since it could be due to cardiac ailment. Thus, assessment of cardiac system needs to be done with basic investigations - ECG and echocardiogram. ECG and echocardiogram will be able to rule out any cardiac disease. If no cause for chest and generalized pain is ruled out, other causes like anxiety can be the cause. I suggest you to firstly get hemogram done for hemogram, colonoscopy for any bleeding lesion and investigations to rule out cardiac ailment. Anemia if present needs to be corrected with appropriate therapy. If any lesion is evident on colonoscopy, it needs to be treated. If any cardiac abnormality is evident on ECG or echocardiography, appropriate medication will be required. If anxiety is established as cause of generalized body aches, anti-anxiety drugs will be required. Thanks and take care Dr Shailja Puri