Sore breasts and pregnancy/period

I get sore breasts every month. But is that indicative of you getting your period, meaning you are not pregnant this month? Or could you still have slightly sore breasts and be pregnant?

My breasts are mildly sore compared to most months, so I’m just curious if that indicates anything substantial as to whether I’m pregnant or not. I can take my test in a few days; just wondering out of curiosity! ☺️