put the 4 things you want to say in order...number them
then just turn the sentences around till they rhyme and add adjectives etc.
the fertilized egg divides many times into a blastocyst
petty soon the female notices...a period she has missed!
good luck, it actually sounds like a fun assignment!
The hip bone's connected to the backbone
And the womb is located just above
Nestled in the stomach near the rib bone
Where the foetus grows and waits.......
You take it from there.