Sore breasts but weird timing...?

Celia • Conceived our little miracle on the full moon 🌕✨ EDD June 7, 2017
My period came September 1st. I have a somewhat irregular cycle but generally it's around 35 days. My app says I'm not supposed to ovulate until around the 18th but my partner and I have tons of sex anyway. My breasts have been incredibly sore for the past week. Is this normal? Would it be possible for me to be pregnant?