You have a number of autoimmune conditions already (RA, vitiligo, Pernicious anemia
in autoimmune patients is common directly to the disease or in some due to the medicines. In your case the hormonal imbalance is another known abnormality seen in patients with autoiimmune diseases.
It is not possible to cure auto-immune disease though we can treat it well.
So I would suggest you to seek a gynaecology consultation for your heavy periods
with a examination and ultrasound
of the uterus . And also start local applications for hair growth. Alopecia might not respond till your autoimmune disorders
are under control .
Do also test yourself for thyroid abnormality. It is konwn to cause period problems and hair loss both.
Hope this helps