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You have low hemoglobin
level that is anemia,because it was very low you have received transfusion.
We need to know the cause of anemia and blood loss causes iron deficiency anemia
which requires source by stool for occult blood and endoscopy to search for cause and would need serum iron
, Ferritin level with TIBC. Common cause for blood loss is haemorrhoids but other causes could be there.
If necessary bone marrow examination
may be required .
You should be able to travel but take care to investigate and treat the cause as suggested by treating doctor.
Peripheral smear could be useful in typing anemia and then relevant investigations for hemolysis
or B12 deficiency may be done.
Dr.Akhilesh Dubey M.D.