i have the IUD and hav had it for 2years now and gaind 20pounds not very happy!and my "dotor keep telln me the IUD is not the reason". "but yes it is reason bein bkuz  after  i had my baby i was find ". wen i got the IUD i gain wight ladys out there our bodys r not da same so do whats best for u but form my time of having it worst time of my life no lady wants to b FAT behind a brith control its not fun at all........