What is SOD?
There are various UK organisations to help those with gut problems. Chrones disease etc. Have a look-see and ask for advice. Make notes.
Do not hide from your children, it may raise fear in them. Being told that "Mum is unwell, it may take a while to find something to help so I need lots of cuddles". Also, delegate so that they feel involved. The worst for me was when things were happening but we weren't told!
Your diet sounds rubbish. Did you not get any dietary advice; if not, ask at the Surgery if there is a dietician that you could talk to. Have a look-see on their web-site which should list who is available either full or part time. Same with the Hospital, look at who is employed. Get your husband to be pre-active and find out the next step.
When did U last have a full blood count, VitD levels etc. tested? You will lack energy if you aren't eating properly.