I wish I had answers for you. I had two children when I was 20 and 22. Then I had two more children when I was 30 and 32. I did have some health problems going on when I had those last two, but didn't know it was ms. I could have been dx then had I pursued my issues with the right doctors. But then I wonder if I was meant to not know about the ms until they were almost raised.
My four kids have all felt the worries and pressures of having a mom who didn't feel well for all these years... and a dad who had cancer. But I can tell you that whether it is ms, cancer, or something else....no one knows what tomorrow will bring. And heartache is a part of everyone's life. Everyone has there own struggles to deal with eventually.
Do you have a close family to help you out? People you know you can depend on? I know what the yearning of wanting children is like. I would not give any of mine back even if it were to save them from hurt and heartache. I believe they have many more positives experiences with me than the negatives. and believe me they have been through a lot over the years.
Now, having said that... I have been fortunate to have a supportive family, not that I gave my obligations over to them. I didn't. But they were there when times were really hard for support and help and different ways.
I haven't given an answer and have none to give. But I know what you are feeling and hope someone else can give you a better answer.
Hugs, A Friend