Glad that I was able to reassure you. The other thing that I did not acknowledge was that you have left your job. When you're highly stressed it is difficult to do much. The brain and the digestive system or gut are very much integrated so when one goes or plays up so does the other. So just be patient with yourself and often Time is the Healer.
I agree that many of your symptoms are stress related, so do not expect them to go away quickly. In the meantime I encourage you to check out the following resource available on this forum:
LOOKING AFTER YOURSELF - link below or above under the Personal Best Tab.
Because you have given up your job, why don't you consider another interest avenue to assist your recovery. It can be anything from needlecraft, reading/writing, cooking, gardening, walking or parents group. This way you will surround yourself with other people with similar issues and interests and in the process develop a support network of friends who will understand and be there for you.
In writing things down for yourself when you get overwhelmed, just take a blank piece of paper and write down everything that is in your head. No need for any kind of order. Just Brainstorm.
This can take the weight off your mind - later when you feel better go back to it and if, necessary create a To-Do list or Needs List. You can do the same with what you need to say to your doctor. Even a therapist. If you have any events or triggers that set you off write that down for your therapist as well.
Take Care. Also check out some of the posts under the Stay Well section of this forum.