"been on kariva for 2 months and it has its good and bads.. bad: i have never experienced such bad mood swings in my life. i have little patience, i get extremely mad and aggivated very easily, i can be happy one minute, then crazy another minute. so be aware of the horrible mood swings. didnt do anything for my 7day period. i break out a week before my period. good: it does prevent you from getting pregnant even on the first month."