I await your response. The answer I have seen does not require knowledge of the Torah, Talmud, Medrash, etc. It answers that Hashem wanted to first have sustenance prepared for man's survival. There is a birkas hamozone booklet with the commentary of Rabbi Noson Shapiro. Hashem first prepares sustenance for the creatures whom he has created.
Pregnancy comes before raising children.
The previous pregnancy and birth was without any hardship. However, the raising of these children was in progress before Chavoh's next pregnancy. Hence her difficulties in child rearing would take place before the difficulties of future pregnancies. This article is provided as part of Shema Yisrael Torah Network Permission is granted to redistribute electronically or on paper, provided that this notice is included intact.