MrsE I'm sorry you're feeling unsupported and that you're feeling so unwell. That's such a tough combination.
Perpetual I'm in a similar boat. My best friend (with whom I also run a small practice alongside our NHS work) started TTC at a similar time. We've both experienced miscarriage and while we've supported each other we've also both misjudged situations and accidently caused each other pain. We've got through it but I'm not looking forward to telling her as I don't want to hurt her or for our friendship to struggle.
I've decided to email her after my scan on Sat (with hopefully positive news). This will give her time to process in whatever way she needs to. We'd then meet up for work stuff within the week. I'm 95% certain it'll be okay - but it's hard - especially because I know that if it was her not me who was pregnant I'd be so pleased for her but it would highlight something that I dearly wanted and was sad about not currently experiencing.