Hi, As someone who has been through this as well, here is some of what I learned:
1. You need to get rid of all of the mold, by any means necessary. Even if you can only get rid some of it at a time, until you get it all, you have to do this until you have gotten rid of it. Personally, using chlorine bleach diluted with water in a spray bottle was found to do the job of cleaning up the mold, but it only works temporarily. The chlorine from the bleach will also help to purify the air by killing the spores. It was found that breathing that, is way less bad, than breathing the mold. This is priority 1 - get rid of the mold, as best as you can. The place I live had lots, and it made this body sick. It took a while to get the situation fixed, and to get the mold cleared out, but eventually it was a success.
It may be needed to repaint your walls, with special paint (there are companies that sell an anti-mold additive, that you mix in to treat the paint.) We did this, and before repainting, we wiped down all the surfaces with mold killer. Yes, it's chemicals, but having the mold was worse. So, that's basically what was done to get rid of it (most of it - you always need to keep checking that it does not come back, and get in the habit of keeping things clean) This also means closets, clothing, carpets, etc. all needs to be periodically checked and kept clean so that mold doesn't get a chance to come back. For this, again, diluted chlorine bleach in a spray bottle will work, it's both inexpensive and effective.
2. Your body will have mold in it and will need to recover, which can take some time. Various natural remedies exists that can be used to help speed up the healing and cleansing process.
A few things I can recommend: get into regular deep breathing - the body needs extra oxygen to be able to help heal itself and clean out the mold. This is a very healthy and beneficial practice to get into, in any case, and anyone has access to it (fresh air) and can do it. It's like a medicine (oxygen) that is all around us, but bad breathing habits (shallow breathing) will lead to your body slowly suffocating and poor circulation. Your body needs oxygen (which you can help, just by making a point of focusing on how you breathe) to be able to function and heal and repair itself optimally.
Taking Vitamin C helps and possibly a multivitamin until it starts getting better. Check ingredients and research what they mean, go for the least amount of additives, apart from the vitamins themselves. Cut out and avoid sugar for a while, as mold/fungus feeds on sugar. If you can't cut it out completely, then limit it to having sugar only during one part of the day (for instance, limit it to only in the evening after your evening meal) but then not for the rest of the day. There are many natural remedies that can help, to help get rid of the fungus/mold. But once the mold is gone from your environment, and you keep it away, in time the body should start getting gradually better. If you don't get rid of the mold, you will keep suffering from it, so that has to be the top priority.
3. If you have any dental issues, this can add to the burden on the immune system, you can try "oil pulling" using coconut oil.
4. Get yourself a dehumidifier if you can and start using it to keep humidity levels down, so that mold cannot grow. This makes a huge difference and totally worth it, as it also circulates and helps purify the air. There are two types, condenser type and adsorbtion type. Both should do the job, but the adsorption type is simpler in design and has less moving parts (so it's probably less likely to break) and it also provides heat, so is which kind would be recommended personally.
Some of the info from this movie, might be helpful to some as well, it suggests a protocol for helping to kill off the mold from out of the body, by having coffee with butter in the mornings (like a kind of intermittent fasting, but made easy) instead of eating breakfast, but, you don't have to buy all the special products (you can if you like, I couldn't affort to, so I didn't), I did it for a while and it seemed to be helpful at the time, using any regular store coffee (or you can use tea as well). It's probably not for everyone, but it may be able to help some people, which is why it is shared:
The moldy movie
I had the complete movie, this says extended preview, not sure if the whole movie is still available on youtube.
5. Stay vigilant, don't allow the mold to come back into your home once you have cleaned it out. If you have lots of stuff stacked everywhere, it is helpful if you can downsize the amount, as less stuff is less work to keep clean.
The Wim Hof method might help some people. Lots about it on youtube. It involves gradual, non forced exposure to cold temperatures, combined with deep breathing, saturating the cells with oxygen (and then get warm again). Hulda Clark zappers might help, believed to "zap" parasites, (uses a 9v battery so it's not dangerous). If you have some electronic hobby skills, know how to solder and have a bit of time to do it, you can even get free plans online and build your own one, or order one from someone who builds them. These are just ideas, that have been encountered when doing research (and personally used/tested). Follow your intuition.
6. Think about your routine and cultivate healthy living habits as best you can, healthy food, cut out bad habits, try to get more fresh air, etc.
If you are going to be stuck indoors for the winter, I can highly recommend investing in a dehumidifier, it definitely helps a lot and makes a big difference, and they are not overly expense.
If you have mold and are going through this, know this - you have a project. Get rid of it, as best you can and in any way you can, until it is gone. Then make sure, that it does not get a chance to come back. A dehumidifier will help prevent it.
Wish all of you the best, its a challenge, but I know it's possible to get through it, you just need to be determined and have to persevere, until you get it sorted. When the mold is gone, and you make sure it does not come back, in time you should start feeling much better. I hope you guys succeed in this, it's a lot of work, but it's worth the effort, and you learn a lot along the way.