Welcome to Ask The Doctor.
I understand your concern.
Since your iron levels are very low and you have a picture of Dimorphic anemia, that is co-associated Vitamin B12 and Iron deficiency. So, you can take both the supplements together. However, I personally recommend the use of Parenteral Vitamin B12 in case of pernicious anemia.
Also, important is to find out the cause of your anemia.
I would recommend following tests:
1. Hemogram with ESR to see for WBC and Platelet count.
2. Malaria antigen test- If you have any fever
3. Liver and Kidney function test
4. Urine examination.
5. Stool for occult blood
I hope it helps.
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