"i&#039;ve been on kariva for 5 months now, and am looking to switch. i get my period the third week of pills for several days, and then again the fourth week as a full period. both sets of periods i get come with cramps, bloating (and several pounds of weight gain, which disappears once my period is over), and moodiness. when i asked my doctor to switch initially, she suggested i wait several months, as sometimes these effects subside, but mine have not."