@EasyPleasey and Thalidomide is still approved for medical use, because it's a damn useful drug and safe outside pregnancy.
It was tested at the time, including on animals. Chirality of molecules isn't the same as a conspiracy. The findings afterwards mean that even more care is taken in testing to avoid harm, including extensive computer modelling to avoid possibly misleading results from using other species (which reduces the numbers of animals used, so win-win there).
I caught Swine flu. DP was seriously considering calling an ambulance. A friend, a long distance runner, is now on the shielding list and permanently disabled due to the lung damage she received from catching it (which led to another fortnight in ITU early this year - not Covid, not flu, just a bog standard bug that nearly killed her). I was probably still vaccinated against it the following year and was fine.
With the exception of the BCG, as I have acquired immunity in the 'conventional' (ie, I got sick and recovered after 9 months to a year when I was a child) manner, I've had every vaccination I've been told I needed/was eligible for.
You crack on if you don't have elderly relatives or any friends who have other medical conditions, get pregnant or suchlike. Congratulate yourself on your suspicions.
And don't forget to remember that, at any time there is a story of a pregnant woman who dies of it, every funeral notice in the local paper, a newborn baby or a six year old with cancer that dies of it - you might have been the one person in the chain of transmission that could have prevented that death.