I’ve also been referred to the crisis team, albeit when I was young and childless, for anxiety and depression. It seems a lot more daunting that it is, when really a lot of the time they will refer you as urgent and involve the crisis because the waiting times are so long and you need to be seen sooner. The most important thing to do is to be honest with them, tell them the way you’re feeling. They’re there to help you and they are extremely unlikely to separate you and your children, as this would probably make things worse. The ladies who came to assess me at home were so lovely, and put me at ease with the whole process.
In the morning I made an emergency GP appointment and went into the surgery - after telling him how I was feeling (he was already familiar with my MH history), he referred me to the crisis team who rang me later that day, did an over the phone assessment and then came out to see me at home. They sat in my front room and we had a good chat where I explained everything, including that I was feeling suicidal. I was petrified and convinced they were going to section me, I even asked them outright and they were somewhat surprised I’d ever expected that. They want to keep you at home with your normal routine wherever possible. At the end, they told me they’d come and see me again next week and if there was anything I needed, there was a 24 hour contact number to ring. They also rang me a couple of times in the week to check I was doing OK.
Try to do things that make you happy as much as you can, and give yourself credit for doing things that seem impossible when you feel so low, even if it’s just getting out of bed or having a shower.
Also, you said you’d recently gone on antidepressants. Within the first few weeks, it’s common for suicidal feelings, as ridiculous as this is for an antidepressant I know. Just try and remember, things will get better and you’re not alone. Take each day as it comes and don’t put too much pressure on yourself to be making constant progress. These things take time and it’s ok to not be ok sometimes.
Good luck with your meeting, and I hope things get better for you OP x