Ok well I'm sorry to say this (I've just come over here from your other thread) but you do have to hide how you're feeling from your DC - I understand that they are 6 and 10 and there is no way that it is appropriate for you to shout at your DP or talk about leaving in front of them. It will terrify them and it will cause all kinds of MH problems later on - I KNOW, I HAD A CHILDHOOD LIKE THIS AND SO DID MY DH.
I have been where you are. A few years ago my DH had to take weeks off work, and then we had to hire a nanny at VAST personal expense which nearly bankrupted us, because I was incapable of being on my own with the DCs - I couldn't even manage a couple of minutes, I was a complete wreck.
But I got myself better. I was lucky that I didn't need to take drugs because I found the right combination of therapies that worked, and I WANTED to get better, and I worked bloody hard at it. (however, it probably would have been a lot easier for me if I had taken the anti-depressants that were offered ... something for you to think about ...) I had a lovely GP and I did a lot of research on the internet to find something that would work.
Have you had a diagnosis of depression / anxiety or similar from your GP? - you mentioned going "back to the GP" so I assume you've already been ...?
I just wanted someone to listen to me and accept that I was feeling so desperate. Once that happened, it was up to me to decide whether I was going to get better or not.
I am so sorry that you are going through this. You need to go to your GP (or get them to visit you at home if you are incapable of going to the surgery. They HAVE to come to visit you at home if you can't get there; just keep repeating the same thing to the receptionist until you get an appointment). Tell the GP everything.
Your DP is probably terrified and doesn't know how to react or what to do to help you.
Re your other thread: you will scar your DCs more by leaving them, and also you will scar yourself more by leaving them. I promise you that it won't be as simple as just walking away from your responsibilites and you'll suddenly feel better. It just doesn't work like that.
Again re your other thread:
"No point talking to docs as they only want to fill you with drugs.I tried calling yesterday and they couldnt even pass a message on for me to my gp."
There is every point in going to the doctor's as they can refer you to your local Mental Health services. You sound very angry and defensive, which is understandable; but without a diagnosis, how do you know what treatment you will need? You may well be able to get better without using drugs if you can get the right sort of therapy for you; on the other hand, you may need drugs but there is no stigma attached to this, and they will make you feel better if you are prescribed the right ones.