mine usually lasts about 6-7 days and i get bad cramps on the first day unless i take a few advil BEFORE it starts to even have signs of hurting, if i wait till after the cramps start then there is no turning back! and i hate it sooo much it is so irregular all the time. scares the shit out of me every month.. it will be in the middle of the month, then the next month like 2 weeks later, sometimes skip a month and then the beg of the next its just all wack! anyone know of anything to do to make it more regular?