From the mists of memory istr a Sgt at Leuchars who took the MOD to court after she was discharged on pregnancy.
I believe hers was one of the first cases roughly early 90's?

One Officer Cadet I had made friends with on my direct entry course (IOT in the late 1970s) told the RAF he intended to get married over the Christmas break (I think his fiance had an "imminent medical concern"). The RAF not only told him he could not get married, but the female flight commander contacted his local Catholic church and told them that his wife-to-be was up the duff! Sounds unbelievable now, but perfectly true. He didn't complete his Officer Training after telling them to stuff it.

Not sure how they did it, I was asleep at the time. But a bodge job, certainly.
Thankfully I discovered what had happened (or rather, what hadn't happened) a decade later and Wroughton sorted it out - I then got my full medical back.