Line 8
I've eaten a bag of green apples,
Again, we see the "I" in this line. Eating a whole bag of green apples in a short sitting, we could imagine, would make the speaker's stomach quite round, so this is another metaphor for the large belly of pregnancy.
There's also a weird sense of guilt here. This admission to eating the bag of green apples could mean that she felt that she's overindulged, and that is the cause that she's become this huge, ponderous pregnant woman.
We can also imagine that these green apples would be quite sour. Eating a bag of green apples would be a lot more difficult on the taste buds than eating a bag of red apples.
This image also makes us think of some other famous females, like Snow White and Eve, who both took bites out of apples and, well, we know how it turned out for those two.