I was so unsure and for a while adamant I wasn't going to have it but...
The research from America shows they have now given it to 120,000 pregnant women and shown no safety concerns. There is no real way that one the effects of the vaccine can be transmitted to baby via the placenta due to the types of vaccines they are. So in theory baby won't be vaccinated or affected by the vaccine themselves prior to being born although if your immune system builds some immunity you may pass that to baby although this is yet to be confirmed scientifically (that's how the Whooping Cough vaccine works).
But... The evidence of non-vaccinated women shows that should they catch covid and (my understanding is asymptomatic or symptomatic - would need to clarify this point) is that the risk of preterm or still born increases.
This information is from Tommy's and therefore scientifically accurate rather than media speculation:
8.5 per 1,000 women who had a positive test went on to experience a stillbirth, compared to 3.4 per 1,000 women who had a negative test.
12% of women who had a positive coronavirus test gave birth prematurely, compared to 5.8% of women who had negative tests.
Those statistics alongside the new Delta variant being 60% more infectious than the Kent variant (which was 60% more infectious than the original variant) means I think being vaccinated is a lower risk than not being vaccinated. Nothing here is without risk.
For context, I WFH and currently live in an area of low transmission but personally feel the fact my immune system is about to drop going into the third trimester puts me at higher risk even though I'm not out widely in the community, does that mean for example I'm 80% more likely to catch it from someone?! I will continue to be as safe as possible until she arrives even with the vaccine.
It's purely your decision and you can change it like I have if you think differently later on. My first jab is on Wednesday.