8dpo and super sensitive, emotional

I feel like a mean witch has gotten into me! I'm 8dpo and hoping the irritability and sensitivity is an early pregnancy sign. Otherwise I'm just clearly experiencing some mood moderation issues! My husband and I got in a huge fight this morning and we so rarely ever fight! But I was lashing out and walking out of the room on him, etc. It started last night and I basically stopped in the middle of making dinner and went to bed in my clothes... at like 730! (Clearly I'm tired too).

Please say others (esp if turned out pregnant) have experienced this type of mood swings before a BFP!