What Causes Stoppage In Menstruation?

Hi, may I answer your health queries right now ? Please type your query here...I HAD THE NOVASURE PROCEDURE AND D&C DONE AT THE SAME TIME. I HAVE NOT HAD A PERIOD SINCE, WHICH IS WHAT I HAD SO HOPED FOR HOWEVER AROUND THAT TIME OF THE MONTH WHERE MY PERIOD IS DUE EVERY OTHER MONTH I GET THE SEVERE CRAMPS LIKE I USED TO DURING MY PERIOD. IS THIS NORMAL?