so I've been a virgin all my life until I got a boyfriend 3 months ago and before him, I was a 32A, but after having sex and all I suddenly went to B cup! And now my breasts feel sore or bigger most of the time? especially a day after our sex (or mostly we do it like 9 days before my period). does sex have something to do with it? sometimes I worry they enlarge because I'm pregnant lol, but naw.