Hello, Welcome to HCM I understand your concern Although Mirena is known to cause abdominal cramps, rarely it does so late long after its insertion as is your case. Stomach bloating could be due to other reason also, most commonly due to overeating, indigestion, constipation, irritable bowel syndrome. I suggest you visit a physician to rule out medical causes before you relate the symptoms to Mirena. Still if you feel discomfort, there are other options of contraception like barrier methods, Depot injection( Depot Medroxyprogestrone acetate DMPA) or strelization which can be looked into. Hope this information is useful. Regards