I always feel weak and tired all the time. i don't do that much of work, i sleep for 7 hrs a day ,i take normal diet everyday but still their is no improvement in my health even most of the times i feel like everything is moving i don't know what is wrong with me. my HB level was 7 gm but after taking iron now its 8 but its not increasing more than that i almost tried everything but its not increasing .my thyroid is normal (level=3) and m not suffering from any other disease please help me