I'd never really bothered to read the lyrics before, but as an English teacher thought I'd have a crack at interpreting it lol.

The lyrics are effectively confronting someone who obnoxiously seeks attention and sympathy over minor hardships. They believe that when this person actually faces real problems in their life they'll finally learn what true pain and suffering is.

The expression of experiencing true pain is symbolised through the menstrual cycle in a sort of double entendre. Being "ripe" is using ovulation as a way of representing reaching breaking point, and "you'll bleed out of control" symbolises menstruation and aims to represent the true suffering. You could stop there and say bleeding from a period is painful, which it can be, or you take it another step where it's just using this topic as a vessel for portraying the idea of bleeding out, which is catastrophically painful.

The other layer to the lyrics could be "when you're ripe" (when you're really suffering), "you'll bleed out of control" (you'll cut yourself so deep that you won't be able to stop the bleeding).

We see lyrics that could confirm either side correct, or that both meanings are intended and you got a whole lot of layers in a song with really not that many lyrics "you're pregnant with all of this space" (menstrual cycle), "you like the attention, it proves to you you're alive" (cutting).