some people swear by evening primrose oil.

i swear by going on the pill. in my case it lightened my period significantly (from 5 full days to 3 light days) and eliminated swelling and cramping. that was when i was 16, however (i went on it to help with PMT and acne). i stopped taking it several years later but my periods never seemed to get as heavy again though the cramps and swelling came back some months. in the last few years i've noticed that my mood is considerably affected. i've just gone back on the pill again so i'll let you know how that is working out for me in a few months. i'm hoping it will help with / eliminate the mood swing right before my period.