You seem to be suffering from excessive hair fall and Though your blood levels are normal , the overall hair growth and rate of growth may be affected more in your case due to other causes. In your case, the hair fall ,maybe prolonged due to other factors as well, such as poor nutrition, stress, lack of rest, low iron and hemoglobin levels, Dandruff,Chemical treatments,dyes on hair can also aggravate hair fall. For your hair to grow well, it needs sufficient nutrition.Fever, typhoid, recent illness, water change, work stress, pollution etc is a factor. Any illness or course of medication, application etc, taken a year ago when your complaints started could have changed the hair texture. it does happen rarely. Though you have been on treatment with iron, you will need to continue it, as hair growth follows a cycle over a period of 1-3 years and takes time for new hair to grow. These causes need to be considered and treated as they affect hair growth. For now you may start with Ducray Anastim serum to scalp at night , along with hair supplements daily like Follihair or proanagen capsule to stimulate new growth. This needs to be continued at least for 2-3 months to see results. Use mild shampoo and conditioner like Anaphase or Renocia for hair growth Do start with the treatment as advised and see a doctor for follow up. But do keep in mind it will take time to improve. It would help if you could narrow down on a possible cause and avoid it. If your hair is very thin and scanty on the scalp, and medical methods do not work well for you,after a few months of observation, certain new surgical procedures can be considered such as PRP,mesotherapy, lasers,etc, as will be advised by your consulting doctor after observation, if they feel that it will be a good option for you. This is a later option which stimulates new hair growth. Also get a good nutritious diet, avoid stress,pollution, get good rest, required for healthy hair. Hope this guides you