Hi Shellb, I'm on estradot 50 and utro 200, so very like yours. 1st and 3rd months I didn't bleed at all and 2nd month I had a scant brown blood bleed. I experience some mild period-like pain so my GP referred me for a scan to make sure my lining wasn't building up which was done yesterday. I'm pleased to say that my lining was fine and only have a small fibroid which she said was ok too. So maybe we are in the 15% as Galadriel says. Maybe our own estrogen has dropped low now. I think mine has given up and hopefully I can get the GP to prescribe a higher dose to deal with my ongoing symptoms. I shouldn't worry, I think it's fine.