From what I gather, dizziness/nausea is not usual from heart surgery. However they are not uncommon with certain medications. Your cardiologist should have a pretty good idea which one is causing the problem.
No,not due to see the cardiologist till 16th Feb,and an x-ray and blood tests on the same day.
Have you had your valve checked in the last three weeks?
Try artichokes for iron, or better still, egg yolks. Egg yolks are full of good nutrients like iron and are like taking a multivitamin a day. Another good source of iron is iron enriched cereals, it will state on the packaging if it's enriched. Eating foods high in the nutrient you require is a much safer and natural way to absorb it into the body. Our bodies don't always like a pill containing single substances.