This is going to all sound very abrupt but I want the best for you. You deserve to be and feel well.

It will traumatise your kids more if you die. It is also traumatising seeing a mentally unwell mum at home who thinks she doesn’t need hospital.
Another thought, if you’re not safe and your hubby doesn’t believe you’re safe then you’re really not safe to parent right now.

As a mum who has been sick pretty much all the time these are the things I’ve learnt to do to reduce trauma:
Do not let kids come in to see you as an inpatient unless you are almost well. The most traumatic thing my kids found was visiting me attached to tubes and machines in ICU. The second most traumatic was visiting me while I was suicidal.
Downplay why you need to go to hospital. Young children only need to know “mummy’s going into hospital to get better”.