Here's the short film (in 2 parts) that started this is all - education film for disabled girls/women.
(check the whole story from Prologue)


I was trying to find more about this film, so far only reference to it is an scientific article by Robert Lenz
(Sexuality and Disability, Volume 4, Number 4 / December, 1981).
Unfortunately the database is not public, but in the abstract there's atleast the original name of the film
"All Women Have Periods"
(in YouTube there tends to be several versions with different names from many movies).


All women have periods, - lenght 10:29
(ebaum doesnt like embedding, so just a link)