Hey dear low hemoglobin s a reason of weakness , tiredness nd feeling low too .last 3month back i also feel same then i go for checkup my hb was 9..then my dr advised me to take iron suppliment, nd healthy diet as add milk , cheese , butter , paneer , green vegerable , fresh fruits , oats , ragi nd protein powder in diet too nd advised to take rest ..i try all these nd take iron supplements too nd reduces my weakness nd tiredness within 15 days..u can try it dear first go for hemoglobin test too.