Use your time to hunt through any paperwork he has for things like bank accounts, pay slips etc and make copies of them, then work out somewhere safe to put them - deposit box at the bank, with a solicitor, with a trusted friend - anywhere but at your house.
Likewise - all your/your dc's important documents - passports, birth certificates, house deeds, your own bank details etc etc - get them out of the house and somewhere safe too.
Take money out of the joint account or at least start to use it for household expenses, save your money for as long as possible.
Also make yourself a grab bag with a couple of sets of clothes for everyone, pjs, toothbrush, nappies if needed, snacks, toys/distractions for the dc, a phone charger for you, and so on, so if you do need to ever grab it and get out of the house (or send somebody to your house to get it) you'll be able to have enough to see you all through a couple of days. Probably forgotten lots of things but it gives you a good starting point.
Get hold of an old fashioned not-smart phone. The old Nokia or samsung brick type that don't have screens or use data and have a battery life of weeks. Then keep it always with you, especially if your dh does reappear.
Get a recording app on your phone or work out other ways that you can record what's going on in case you ever need to again, as evidence.
Talk to the local police as suggested - but also ask if there is anything they can do to suggest how to make your house safer.
Dig out those contact details for old friends and family that you've cut yourself off from - and start to make contact again. Even if it's just to say you have a new phone number and you hope they're well and how about catching up for coffee one day - something little just to get that contact started. Not everybody will be able to respond immediately or be able to catch up immediately - but I bet they will all be pleased to hear from you. It might take time but even if just one or two people respond to start with -- it"s a start to build on into your new future.