Bunny, I like the 'I'm expecting' app - a convenient way to track weight, symptoms, notes etc.
There are lots of email lists out there with weekly updates - NHS, NCT have been useful so far, though I've tried to be careful not to sign myself up to anything that's going to spam me. In a slightly paranoid precaution but I set up a separate email address for all pregnancy related stuff so I could stop getting all of these emails instantly if anything went wrong.
'Expecting better' is a really good book to help you work through some of the evidence on various bits of pregnancy advice. I also came across a lovely book called Precious Babies, on pregnancy etc after infertility, which really helped me process some of the emotional differences between pregnancy after infertility compared with conceiving quickly.
(Can you tell I've been spending a lot of time stuck on the sofa lately?)