Question for other Mirena users...

I have had my mirena for just shy of two years, and have a light five day period every thirty days. Suddenly this month I got nothing...not even a day of spotting or swipe of pink, and am now 10 days late. Took a hpt (in the evening because I'm impatient) and it was negative. I am going to take a fmu test in a few days if flo still doesn't show. I am exhausted, sore/tender breasts, acne, mood swings, and am experiencing slight cramping in my lower abdomen. Has anyone else experienced this while on mirena, especially after the year or two years mark?