noun
postpartum rage; postpartum irritability
Colloquial term used among mothers to describe a period of intense irritability and protectiveness after childbirth, often directed at the partner or in-laws.
産後、ガルガル期で夫にイライラしてしまった。
After giving birth, I went through a postpartum rage phase and got irritated with my husband.
ガルガル期はホルモンバランスの変化が原因と言われる。
Postpartum irritability is said to be caused by hormonal changes.