Mummy
Your last post screams of B12 deficiency to me. Mine was missed post birth too & was exasperated by an overdose of gas & air plus pregnancy. Post birth is a common time for it to show up
Go back & see a different GP & Insist on those blood test results, turned out mine was actually diagnosably low at my daughters birth. They even kept me in hospital for it, but just told me anaemia, forgetting to mention it was pernicious anaemia & it was another 14 years before I was diagnosed & treat, which has left me disabled & it put my daughter in a wheelchair until we worked out what was going on & insisted they trial B12 injections on her.
I can't stress enough how important it is that you push for treatment & diagnosis as B12d will be affected by any surgery you might need, dental work, antibiotics & so on making it all gradually worse. Your diagnosis will making your DCs diagnosis easier to obtain too.
Unfortunately there is a HUGE amount of ignorance around B12 deficiency & too many doctors don't have a clue & the bad ones arrogantly think they do anyway & get it badly wrong. I was diagnosed with fibromyalgia by a doctor who told me it was a mental disorder for middle aged women who couldn't cope with getting old
I actually had PA & EDS which is linked.
If you live in an area with a lower low end B12 range, you might actually be low according to NICE Guidelines (200, which should be treat urgently) & yet still be dismissed. There are Facebook groups with tens of thousands of others, mostly women who have been misdiagnosed or missed completely & their symptoms ignored
This link has all the information in one place & the photo I will add, is from the NHS page on B12 deficiency & is what my DD was diagnosed with. The blood tests are often wrong & should be ignored in favour of symptoms.
They do need to properly treat your ferritin deficiency though too as B12 uses it to make healthy blood cells to heal your symptoms
www.b12deficiency.info/signs-and-symptoms/
This link explains it all