How come my boobs become so sore when I'm on my term?
I don't know; maybe hormones?
There are a lot of hormones going through your body at the time which can rationale your breasts to become sore. Source(s): Happens to me too.
Usually that's what happens to me. It gives you a sign when your period almost to starts or it's about to end.
: Azngurl K
its all to do with the fluctuating hormones. Doc can prescribe meds such as mefanamic acid which can be relatively helpful.
It's nothing to worry about, every girls breasts become sore and tender during the menstrual cycle. Completely average :)