Sore breasts before AF vs when pregnant

Azalia
My breasts usually get sensitive the week before AF shows up and this goes away as soon as she shows up. I know sore boobs could be a pregnancy symptom, but when does it start when you're pregnant. Is it the same time or later. I'm in my tww and want to know if I'm out for the month if my boobs get sore the week before AF is due or if there's still a chance for a bfp?