Majorly irritated & upseted..AF due 3rd!

Feliece
I'm one day past my fertile week. I believe my O day was the 20th...according to Glow. Today I have just been SO DARN MOODY AND ANGRY AT EVERY ONE. I fought hard core with my SO...and everything irritates me. This usually doesn't take place until a few days before AF....what could this be?????