Because I think I have it.
Background is 4 months ago, 2.5 year old DS had a serious accident abroad. He stepped onto a low wall and I couldn't get him off in time before he fell off the other side. It was a 10 foot plus drop. No signs of anything to suggest danger. Spent 4 days in Spanish hospital. He fractured his skull and had a seizure. It was terrifying and awful.
Since then, i"m a mess. My guilt that it was my fault Consumes me. I also worry constantly about everything- including him but also everything else. Every problem becomes the worst case scenario, I literally go from zero to one hundred and I feel exhausted by my worrying. Some days I swap one worry for another, but there is always one. 
I'm also not sure how I can live with the knowledge of what I've done to him.
I mean, how I can come to terms with it. I felt like an unfit parent who has failed completely in their duty.
I'm on a list for counselling- have been for 3 months, but no news yet.
I'm wondering what I can do until I can speak to someone to get this under control?
I should probably also say that I'm currently looking after 2 under 3 most days. I barely get to the toilet, never mind finding the headspace to deal with this. 