At present, women are not advised to have a Covid vaccine during pregnancy, or if they are planning to get pregnant in the next three months.
There are no safety concerns from any of the data but, as in most trials, the vaccine has not yet been tested on pregnant women.
As a result, the official advice is that women should postpone being vaccinated until they have given birth.
NHS guidance says that if a woman finds out she is pregnant after having the first dose, she should not have the second dose until after the pregnancy has ended.
The vaccine distribution will be largely prioritised by age, so the majority of pregnant women would be low down on the list to receive it in any case.
Even pregnant women who are at higher risk of coronavirus – with underlying heart conditions, for example – should wait until after their pregnancy and then have the jab as soon as possible afterwards.