A low MCV and MCH together with a high RDW is the classic pattern of iron deficiency anaemia, where red cells are smaller and more uneven in size than usual. Your haemoglobin at 8.2 confirms this is a real anaemia, not just a lab quirk.
Next Steps
This needs proper treatment, usually iron replacement guided by a doctor, and a check for what's causing the iron loss, commonly heavy periods in women your age. Please book a general physician or gynaecologist visit this week.
Health Tips
Seek care sooner if you feel breathless, your heart races, or you feel like fainting.