Pregnant or something else?

Lately I’ve been feeling pain on my breast my nipples are very sore and just the whole breast hurts. And this usually happens a week or week and a half before my period comes but I just finished my period about a week ago and I was fine.

But right about yesterday my boobs started hurting extremely bad they feel very sore and tender my nipples are very sensitive. While having sex my boyfriend tried grabbing my breast but I asked him to stop because they are so sore. I was wondering if anyone knew what could be causing this. I did some research but Google is not very helpful all the time I’m just wondering if it could be pregnancy or something completely different I’m not really sure I wanna know if anyone else has experienced this. My period is very consistent in time and always comes around the right time it’s not irregular.

Also my boyfriend and I did have sex after my period which again was about a week we can a half ago. We did the pull out method not really scared of getting pregnant we would love to have a baby but I’m just curious if it could be pregnancy or something completely different.