Follow the courts relocation language which usually requires a 45 day certified mail notification of your new address and phone number to your ex. Read your last agreement and court order and follow the language exactly to prevent your possibly loosing custody.
You do not state whether or not you have taken him to family court for paternity testing and a child support and/ or a visitation order. If you have you might want to petition for supervised visitation based on the two heroin overdoses. You can also bring up the overdoses at family court and ask for him to be drug tested regularly.
See if they have a legal services or volunteer lawyers around you to help with this. You can really mess yourself up trying to do this by yourself trying to get it for free. Bankruptcy is not something to file without knowledge of that law.
I have been told not to have more than three store cards and never have more than 1/2 the balance charged to have the best effect on your credit. I'd keep charging and keep paying them in full personally.
Suggested answers would be file a claim for dues due prepetition. File a Motion for Relief from Stay if the case is already confirmed to get court approval to being the foreclosure process. If the case is not confirmed file an objection to confirmation and/or motion to dismiss on the grounds that that debt is not provided for. If you are the homeowner association hire an attorney experienced in bankruptcy law. If you are the debtor amend your plan as all debts are supposed to be included.
If you are paying 100% of your debt back your medical creditors may well agree to allow you to add their bills into your current chapter 13. It might increase the payment. Go talk to your attorney and take the bills with you. The other comments made may well have to be a path for you to take as well, like dismissing and refiling or converting to a chapter 7 if the bills are just to hard or if you are in less than a 100% repayment plan.
Tell your friend to only talk to his attorney - no one else whether he hires one or has one appointed. He's prob bought himself a world of trouble literally that he will need an attorneys help resolving.