I'm wanting to get an IUD and have an appointment with my doc in a few days and I'm kinda freaking out about the side effects.  I like the idea of Mirena potentially taking away my periods altogether but am very concerned if it will make me gain weight due to the hormones. Does anyone know if it typically causes weight gain?  The ParaGard freaks me out because I don't like the idea of having long heavy periods.  Is this one of those things where I can't have my cake and...