 [ Symptoms ] does mirena iud cause weight gain if a period has not been had for 10mo and only had iud for 12mo  no period for 10mo out of 12mo of having iud a lot of weight gain with no changes to diet or exercise bloating in stomach and cyst increase [ Disease ] i am no expert either but the first thing i thought of was arthritis or joint problem pain swelling and redness usually indicate inflammation