> Particularly given the alarming stories of people being prosecuted for having miscarriages

You need to delete your social media accounts and change where you're getting your news from. Nobody is "being prosecuted for having miscarriages". A few people have been investigated for drug abuse during pregnancy which led to the baby's death, which sensationalist news stories twisted into attention-grabbing headlines.

A doctor asking about cycle is just a core piece of diagnostic data like taking blood pressure and temperature, not some conspiracy to harm you.

> and they will ask me to make one up if I can’t remember or want to decline giving them that information

Doesn't this suggest that they don't care what the answer is?