M.G.
I had my iud insertated 2 months after the birth of my first and only child. I kept my iud in for 1 and 1/2 years. During that time I had cramping that could be very painful and ones that were more like a period cramp. I had light periods at first then eventually went to having no periods at all. I also at one time that I could have conceived with the iud and I was concerned and went to my OBGYN. They did an interanl ultrasound and pregnancy test and I was not pregnant. My Ob told me that my cramping and no periods were common for women with an iud. I hope this helps!