7days dpo symptoms??

Silvia • My name is Silvia :) I`m from California I`m married and have 1 child. I am a stay at home mom and currently pregnant with baby # 2
I have been experiencing sore nipples and sharp cramps. Also I'm so moody!!!! I got mad at my husband for eating the last bit of ice cream ! And I don't like that kind hahaha but I have been having sharpness down there and definitely sore nipples while they throb a little. Can this be a sign of pregnancy? I'm supposed to get my period this Sat.