After donating blood, you feel fatigue, loss of appetite, abnormal heart beat?

Question :
Hello Doctor. On December 22, I went to donate blood. After nearly 3 weeks, I feel uncomfortable, tired, anorexia, shivering, heart palpitations, spine, body fatigue, dizziness. The doctor asked me what condition it was? Thank you Doctor.
Nguyen Thu Huyen (1992)
Reply:
Hello. Before donating blood, have you ever had a complete blood count (check for red blood cells and hemoglobin before donating blood)? For each person, the average amount of blood donated for each time is 250ml (total blood volume of each person 4500ml - 5000ml). If you did not have anemia before, then after donating blood, the ability to recover will be better.
However, for your situation, after donating blood, you have many symptoms described as an anemia, to comprehensively evaluate whether you have anemia or not, you should go to a medical facility to have a blood test. such as blood count, serum iron,...
If the results show anemia, you should receive additional treatment with drugs and monitor. Thank you for sending the question to the doctor. Best regards.
Master, Doctor Nguyen Thi My - Department of Medical Examination & Internal Medicine - Vinmec Danang International General Hospital.