Gosh. You really are catastrophizing. That sounds quite difficult for you.
How you deal with the situation as a parent has a humongous affect on your mental health and the mental health of your children. I’ll give you a couple of examples so you can maybe see what I mean.
My dds friend came to my house and was talking about how worried she was about her mother. She had an unexplained event several months prior to this discussion, which might have been a stroke and a the few weeks off work due to her feeling fatigued. Nothing came up. I think she is getting more tired now, definitely more grouchy from what her dd says, but nothing, which is stopping her from working in a demanding job and cleaning the car by hand of a weekend and going on active holidays. She about 50 and works 12 hour shifts a fair drive away, has older children and is an active grandma etc. She actually told her tween dd she may have MS but this was ruled out. I don’t understand why she had to prepare her children for something, which never happened. This poor kid has been really impacted and from the way the girl talked I think she is constantly monitoring her mother as if she’s going to die.
I sat there wide eyed because the girl was talking about how worried she is about her mum as if it is some kind of massive trauma because of dr google. Meanwhile my dd is dealing with me, a mummy, who was incredibly ill last year that by the time I had major surgery I literally didn’t care if I died on the table - not that dd knew of course - and got all my affairs in order half hoping to die. I have since had a second extensive surgery, been chronically ill, often bedridden for so long dd cannot remember me another way.
My life is and has been fucking tough. I’m disabled and the recovery from the second surgery is totally fucking with my mental health in a way the first didn’t. Yet my dd lives a relatively normal life. Yes, she monitors me a lot because there is a very real danger I’ll be ill on a short shopping trip. She saw a child psychologist some years ago because my health was affecting her and as a result dds mental health is now pretty robust now.
If you do have MS, you are obviously both going to need to make adjustments and come to terms with a diagnosis. However it will be really helpful for everyone including yourself if you could find away to stop your damaging and intrusive thoughts.
I’ve had a lot of therapy. It sounds like you need to talk this through in a way that your dh cannot. Therefore I think it would be a good idea to find a therapist to talk this through. Do you have the funds to pay for one?