The doctors need to understand that the low hemoglobin level has nothing to do with iron deficiency. It is due to thal minor and minors will see their Hb drop during pregnancy and this is normal. I wouldn't worry about the iron reading of over 200. This has to be taken in the context with other iron tests and is not significant. You should however, be taking a high daily dose of folic acid, as much as 5 mg daily. This has far more to do with maintaining your Hb than iron, as foliate is needed to build red blood cells. If you tend to stay well hydrated, this will also lower your Hb due to dilution and also is not significant.
Generally, the rule is transfuse after two consecutive Hb readings of under 7. The condition of the patient also must be taken into account when thinking about transfusing. If the patient is doing well at an Hb above 7, then wait and see is the best approach, but preparations for the event of a transfusion during the delivery should be made as a precaution.
As long as you are feeling good and not overly fatigued, the only intervention needed is take folic acid, eat a really good nutritious diet and get sufficient rest. If you suddenly feel very tired and fatigued, call your doctor and have your Hb tested.