I've had it at 26 weeks pregnant (second dose next week) entirely through me requesting it as I'm eligible as a frontline nhs worker. I even tried to be included in our local research trial, but was understandably excluded.
Part of my weighing up process when deciding whether to persue having the vaccine is that it's not recommended as routine use in pregnancy purely because they cannot test it on pregnant ladies already, so although data and research has not thrown up anything that suggests it wouldnl cause harm, they also can't say to what degree there is risk due to lack of research data.
I looked into what the vaccines were modelled on (I've had the Pfizer) and realised that despite the media spin of them being brand new rushed vaccines the science that they are based on is not new. Also, having worked in research myself in the past, a lot of the time an intervention may be developed relatively quickly but it's obtaining the funding and setting up trials that takes a long time- both of which have been sped up due to the natire of Covid being a worldwide crisis.
Due to my job (I work on a ward where we've had covid several times) I felt I was more likely to potentially catch it than the average member of the public and in weighing up risk I felt catching covid in later pregnancy seemed more risky to me.
Lastly, I told myself that pregnant women are actively encouraged to have certain vaccines, such as flu and whooping cough.
Sorry, that's a massive ramble! I don't have GD but I do have other pregnancy-related issues that mean I'm closely monitored and so far there have been no obvious effects to either me or bubba from having the vaccine. At the end of the day though it's entirely your choice to make! 