i thought i was preggy,

Hello po, i just want to share my experience, i thought i was preggy, kasi po i am experiencing tenderness of breast, i can feel also na lumalaki ito and kapag nagagalaw sya super sakit. I always feel sakit ng ulo din, but i did not yet experience vommitting, it was oct 30 my first day of menstruation and last nov 4, since then i never took pills already, i never experience tenderness at paglaki ng breast pag nagkakadalaw ako dati. It was just sakit ng ulo. But today, nag bleed ako. What does that mean?