First of all
note that Pregnant mothers seem to have a
higher risk with the variants. The CDC recommends J&J and considers Pfizer, Moderna also to be safe. They also say use at your own risk, but also say in high risk situations better take the vaccine.
Israel did vaccinate all pregnant mothers and did not find any issues. They used mostly Pfizer.
In fact, Moderna, Pfizer, J&J and Sputnik has done animal studies and says their vaccines are
embryo safe.
On a positive note, vaccinating the mother will
protect the baby as the antibodies can cross the placenta during the
second and the third trimester.
This is a proven fact and IgG antibodies against SARS-CoV-2 is detected in the cord blood at birth, confirming the transfer of maternal antibodies to the foetus via the placenta.
Many countries does NOT recommend Sinopharm for pregnant mothers, mainly
because of the lack of published data by the Chinese vaccine makers. All these efficacy figures and fancy data come from other sources in the Middle East etc. -
(Also there are a couple of Chinese scientists in this forum, who seem to know anything and everything about Chinese)
China specifically said that you could get pregnant
after the vaccine and there's no need to delay. The most recent note issued by the Chinese Health authorities can be found from the link below. (End of March 2021)
http://www.nhc.gov.cn/xcs/yqfkdt/202103/c2febfd04fc5498f916b1be080905771.shtml
Read it yourself. This details everything and note that it mentions that pregnancy is a contra-indication. (if the Google translation is correct) It seems they themselves doesn't have the necessary data too.
So if you can get Sputnik or AZ there's nothing to worry. So many pregnant mothers already had it and delivered babies too. Not the Sinopharm.