Not sure if I am prego..any advice?

So my period is supposed to come in the 25th next week. My husband I had sex on last Friday. But starting this week my breast are becoming more and more sore and swollen. I have not been nauseous or had any type of implementation bleeding. It's not usual for my breasts to be sore a whole week before my period starts so I am not sure what is going on. I took a test on the 17th and it was BFN. So I am confused any help ladies??