Nuvaring help

Has anyone ever had the Nuvaring totally stop your period? Even after you take it out after three weeks to have a period? I'm on month two for the Nuvaring. The first month I had a period like expected but this month it's been 6 days since since I've taken it out and I'm not even cramping. I've taken two pregnancy tests and both are negative. I just don't know what to think. Has anyone ever had this with the Nuvaring?