i’m 17 and it seems like over night my boobs noticeably grew bigger and are a little sore and I don’t know why. me and my boyfriend have a lot of sex so he was worried I might be pregnant so I took a pregnancy test 3 days ago and it was negative. my next period is in 5 days and they normally get sore but they have never grown like this before. anyone have any idea as to why this might be happening?