birth control
"I'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."