It actually invokes an immune response, so that your body attacks the IUD and creates an unsuitable environment
for embryo implantation. I read that one doctor does not recommend an IUD
for anyone with an autoimmune disorder, which Crohn's and UC are. I decided to remove the IUD and monitor my response.
I have kept diaries where I recorded the food I ate, day of mense, presence of pain, bloating, ect. But as soon as the IUD was removed I felt absolutely no pain!