Answer:
His wife may be experiencing postpartum depression.
Explanation:
Postpartum Depression can be defined as a state during pregnancy in which a mother goes through various emotions from joy to excitement to anxiety.
It is not a mental disorder, but a condition that is triggered during pregnancy time. Postpartum depression, in simple words, can be defined as a complication of giving birth. Symptoms of postpartum depression include anxiety, crying, mood swings, etc.
In the given case, Philip's wife is going through postpartum depression in her pregnancy as she is having mood swings, and having anxious thoughts.
So, the correct answer is postpartum depression.