8 DPO

I have been feeling very off. My boobs are super sore but usually always are before AF. The one symptom if it even is a symptom is I have been a huge bitch. Like the biggest bitch ever! I will literally bite someone's head off over anything lately. I really am not myself. I have been flipping out non stop and everything gets on my nerves. I usually am a bit like this anyway because I'm just a aggravated person in general but I have been super crazy and idk if my hormones shifting could cause this? I was pregnant once before and I remember being super mean to everyone also. It is literally like a demon takes over me lol. Please let me know the usual symptoms at this time if there even is any. I could also possibly be 9 dpo, not sure.