Extremely sore breast never like this before !

Hello we have been truing for baby #1 for 3 months ! I'm 12dpo and have extreme sore breast I get sore breast before my period but never like this. I cannot even place my hand on one side of my boob, and have to take my bra off. I don't know if I should test, I've been disappointed so many times ! :( did anyone get something like this and found out they were pregnant ?