In almost every country in the world, ALL prescriptions drugs have to be tested on animals before being authorised for distribution.
Several countries, China above all, also impose animal testing for every single beauty product from shampoo to lipstick.So if a brand you use is also sold in China, you can be certain, it will have been tested. The labelling and claims are often misleading. Cruelty free doesn't have a geographical component, so it might be cruelty free in UK because the testing is done in France. Also it can be true that it is no "currently " doing testing, because they did it 2 years ago.
Even vegan food have used this loophole. The best example is Quorn, which when it was developed was first tested on animals for many years.
All vaccines have been tested on animals. Animals have accompanied medical advances in every step, from transplant to IVF,
If it reassures you in any way, COVID vaccine is the one with the least animal testing of all, since all steps have been rushed and melted together.
Even the gas you will maybe use for childbirth has been tested on animals, the anaesthesia for your c-section if needed and so on.
Either you refuse ALL medicine for you, your husband and future child or you make a compromise.
The history of humanity in all its development is closely linked and interlaced with the animals that have been used. Transport, combat, space program, companionship and agriculture before machinery .
We as vegan are aware of it, and we try to avoid many product when possible. But become an antivaxxer for that, not me.