I don't know what sort of company you work for, but if you have an HR manager you can talk to, and the details of your conversation would be private, that might help? Starting a new job can be difficult, but it's important to disclose, you should get support it's the law. You are protected, they shouldn't discriminate against you, so don't feel bad about yourself.
I have a lot of depression, and anxiety too. Here are my tips, you might think them mad, or not?
Mindfulness - it's so simple. It might seem daunting to get into, but it's slowing down when you can, thinking about each individual action, slowing what you can. Even just taking 5 minutes out of your day, look at the sky, try and find anything that isn't what's being rammed down our throats, fresh air. There are loads of books on mindfulness, but I really recommend "Washing up is good for you", which is a book of stories of people's lives that have improved by just stepping back. I know the title sounds ironic, but it's really good.
Healthy diet - so important, for you, your family. I know we are all being told this is good, that is good. Some stuff we eat is really not good. I will not tell you what to eat, but if you work out what food is good for your body, and cut out all the stuff that you know is really doing you harm, but you do it anyway, it might help? What you put in your body is so so important, it helped me when I was struggling, to completely change my diet, bit by bit.
Just a few ideas that might help you @ohmyitshorrible I hope this helps you, there are ways to change, and things that can help. I know it can be overwhelming, but life can change