Hi 'Give Me Strength', I put this in another thread you started but now think it best here.
Am so sorry you are having a terrible time not only with this insidious dis-ease but also that you must hide it from the working world due to and ignorance and lack of empathy of how deliberating the symptoms can be!
If you have a supportive doctor, get a sick certificate with 'medical condition' for reason and for 5 days or how ever long you need.
Your work does not need to know what medical condition you have. I know this can be hard and overwhelming to do but the effort is worth the relief of having this in place to take care of yourself.
What may help if you are working from home or have some help is:
Make a strong chicken bone soup with lots of coloured vegetables. I use a pressure cooker to speed the process up and store in containers, some I freeze.
You can do this in steps, boil the chicken, leave and rest, drain the stock, rest, cut the vegetables in stages and rest, sometimes I do them while in bed with my feet and head up with a low night light. Rest in between stages but make about 5 litres to last you for several days. (Can do other such as pork or beef etc.)
I usually add some meat such as a chicken fillet or pork etc. for protein.
Add some gluten free pasta to thicken in the last 10 minutes
Eat this for a couple of days just for balanced nourishment and making meals simple.
Another option is to have protein shakes at times like this or if friends/family want to help, ask for soup or basic meals.
Rest is a very dark quiet room for a couple of days, no phone, TV etc.
After a couple of days you may be able to do 30 minutes work but make sure you rest for 2-4 hours in between and try and increase the 30 minutes after each rest period by 10 minutes. Let your body guide you.
Take a good multi vitamin/mineral, omega, etc. I'm not convinced heaps of supplements are of benefit and only take a few myself and can let you know if you want. I think sometimes we take heaps due to our desperation to feel better?
I can't take prescription drugs as they rattle my digestive system too much, nor alcohol.
I hope this helps even in a small way, take care and be your very own best friend and listen to the wisdom of that best friend!