I second that, lovely post MrsE.
detective, there are loads of us on here willing to support you through this tough time. I think it's a myth we all have wonderful support systems & close friends & family able to help in times of need, so you are not alone in feeling alone. My family can't/won't help, ditto (in spades) DP's family. But one thing I can say is you will muddle through, whatever life throws at you.
As an already disabled mum, now with a second very limiting condition which I didn't have last pregnancy (& which is likely to worsen with a vengeance once baby is born), I totally get why you are anxious how you will cope, but we will hon, by putting one weary foot in front of the other. Asking for help on mumsnet when we struggle or want to share our feelings.
We will be fine, I have decided :)
Big hugs, you definitely have people on here and are not alone. Xxx