I’m so sorry to read your post and see how badly affected you are by your ex partner’s drug habit. Things must have been very tough for you as well as losing the baby and worrying about the debt.
I work for a charity called Icarus Trust who support people like yourself who are affected by a family member’s addiction. We have trained and experienced people who would listen and try to help you find a way through this.
You can contact Icarus Trust on help@icarustrust.org or visit our website http://www.icarustrust.org
All the best.