Hey Sally, I thought I would chip in (I haven't been on this new thread but you might have noticed me on the previous 4 or 5 😉).
I have a nearly 6m old DD and I'm single too. I had a doula with me for the birth. If you look on doula.uk.org (I think), you can find some mentored doulas who are way cheaper than the fully qualified ones. My doula was mentored at the time I booked her but she was fully qualified by the time I gave birth and it 'only' cost me £400, so about a third of the regular price for a doula in London. My birth ended up being very medicalised due to pre eclampsia and the need to be induced but she stayed with me the whole time and listened to my rant while giving me back massages and bringing me food.
Like Pickle, I have been ok coping on my own so far. I agree with her, the mental support is so much more important than the physical one - or so I've found (I'm used to doing everything on my own anyway and didn't want people staying at ours), so your phone will be your friend! I also highly recommend doing an NCT course. I meet with my NCT friends at least twice a week and they're great.
I also planned massively, whether it was my finances (visiting nurseries when I was only 6 months pregnant) or batch cooking prior to the birth so that I had ready meals for the first few weeks.
Announcing my pregnancy to work and friends was really easy, no one batted an eyelid and everyone was just so happy for me and offered their support. It's very common now for single women to have children via donor conception and you'll find that a lot of people will say 'oh I know someone who did the same'
To echo Pickle, just ask anything you need to know. I got pregnant on my first ivf cycle after 3 failed IUI (non medicated). The clinic was very close to work so I just nipped out at lunchtime or faked an errand and no one suspected a thing.
Waves to everyone (and wink to redpanda whom I spoke to on other thread today 😉)