ʿIṣyānuhā refers to the female’s resistance or refusal to follow the male, while wiḥāmuhā refers to changes of appetite or disposition associated with pregnancy. Together they explain the male’s anxiety.
Grammatically rābahu is a past verb with the male as its pronominal object; the stated causes are ʿiṣyānuhā wa-wiḥāmuhā. The action appears first, followed by the explanation for his unease.