I'm not sure who your insurers are, but their response is APPALLING. Unless they're spying on you, or you admitted to living on ice cream and vodka, how can they justify this?
Meanwhile, you need an iron infusion.
The problem is that when you're this anaemic, you don't really have the will to have good compliance. Everything is too much of an effort.
Ironically, if you are anaemic, you usually have heavier periods.
I cannot believe you got a far as a haematologist and didn't get an infusion.
Your GP obviously wanted to help, in that they requested an infusion. Did the request just go to a private hospital needing insurance approval, or were you requesting it at an nhs hospital? It maybe a clinical decision, but we now know that women are treated unfairly in health care, and expected just to put up with things.
I'm also baffled that no one had checked your gut.
If your periods haven't changed, how do they know you haven't got a gut problem, micro bleeding? coeliac? There are tons of potential issues.
Meanwhile I agree with go back and pester. Transexamic acid from them, and another request for an iron infusion from them, and ask about absorption/gut.
Meanwhile, buy a serious iron supplement, yes to the fumerate version. And set an alarm to take it every day, before/with a meal.
Try even for 2 weeks, when you're nearly at zero you'll start to get better much more quickly. The red blood cells don't all turn over in one go
.
From day one of taking the supplement, every new rbc will pick up some iron, until you'll be at max in 3 months. So some people feel the benefit within days.
IF you get through 2 weeks, try another 2 weeks. If you get to 8-10 weeks with literally no change in your energy levels, you need to go back again to your gp, and ask for further advice.
Coeliac disease is one of the most common causes of anaemia, and given your periods haven't changed I'd say a gut reason is far more likely. When you cannot tolerate gluten (or avenin in oats), the vili that usually stick out in your gut get flattened, and can't absorb nutrients. It would be interesting to know what your b12 and vit d look like too.
You can suddenly become coeliac, after illness, with age
, etc etc. It can been genetic, which the gene being expressed only after many years and/or stress such as illness.