PMS
Men will never fully understand this but being on your period is hard! Your hormones are all over the place, you’re in pain, it’s uncomfortable, and it feels like everyone and everything is out to get you, including your partner. Even though they may not actually say or do anything, you find a reason to get really mad at them.
It could even be something as trivial as they didn’t say good morning, or they forgot to pick up something you asked them to, or even the fact that they’re just standing there breathing. Yes, it happens and even though we’re aware we’re being stupid, we just can’t stop. It’s not us, it’s the hormones, we promise.