Bron the Diva only comes in 2 sizes, before and after (a baby) but i have found that before fits fine after (maybe not immediately after but 10 weeks after definitely). I am prepared that i might need another after having another baby or 2, and if i do i'm going to buy the mooncup as i am short inside and usually have to stick the cup fully over my cervix to prevent it poking out. The mooncup is the shortest on he market AFAIK.

Bx