All i want you to do is get better. Take any help that is offered and stop being too proud to accept.
You need to keep seeing your gp, and any other professionals as well. Mn is a fantastic place, but it cannot become the only thing to keep you going, although it is v easy to hide inside it's blanket of security and support.
You have to try and take some small steps to help yourself now, as we can only do so much. I believe that you love your kids, and you are a good mum. I believe that you are extremely unhappy , but you dont want to die. I know you are struggling to cope with life and the things you have to deal with, and that is completely normal for someone in the middle of a major depression, I have been in the same place as you remember, but the main fact , however harsh, is that you DO have to try and cope. It is not just about you now you are a parent. It won't be easy, will feel like wading through treacle, but it can and will get better, but ONLY if you make a superhuman effort to help yourself, and that starts by going to the gp and taking her advice. I spoke to her for quite a while and she does want to help.
Use your friends in rl and on mn to support and encourage you during this journey, but you have to make those first few steps alone, if you want to start getting better.
Take care and much love xx