I recently switched from mycrogyon 30 to cerrazette. I only took cerrazette for a few weeks in which at the beginning I bled. After a few weeks I stopped taking it. I had a light spotting about 2weeks after I stopped for only 3days it was pink. I have not had a period since. I worked my period out from my last bleed and that should have been 7-10days ago. I've took tests and they all keep coming back negative.