i certainly don't think you are a troll.
Mental health issues - thats a scary label. If your eating disorder was caused by a dodgy liver not allowing you to eat without vomiting, you would go and bang on your doctors door until you were treated appropriately. If you had diabetes, you would accept treatment and wouldnt feel ashamed. You have nothing to be ashamed of.
I have mental health issues, i am on ADs and im having counselling - i will happily tell anyone i meet this. ITS NOT MY FAULT, i'm not a freak, i just need a helping hand. There are so many women on this board with mental health issues - Feeling shitty for no reason, we all do that - have shit days, i guess that is the mental health equivalent of a cold - we all have mental health issues. Some of them we can cure with a warm bath and a girly film and a cry, others need professional help. Just as a cold can be treated with a box of lemsip, pneumonia needs professional help. If that makes any sense.
You owe it to yourself and your children to get yourself healthy, eat healthily and ensure they have a healthy attitude towards food,
With regards to the calcium - you can take as many tablets as you like but unless you start eating your body wont be able to metabolise it, so osteoporosis very much IS an issue.
Chewing food and spitting it out - you are going to end up with stomach ulcers at worse, and terrible indigestion at best.
Sorry if this seems harsh, but i just want you to get some help. Go to the doctors TOMORROW, while you still have this in your grasp and don't rationalise it away. You are NOT wasting their time.