Is it possible that there is another type of gestation besides the literal one?

Yes, gestation may be defined as the conception and development which takes place in the mind. An example would be the "poem" or "novel" that has been in gestation for a long time, as its conception had occurred long before the finished product.

Is there any possible connection between what the poem is saying about the fixed cycle of pregnancy and it's from the nine syllable nine time?