Hi Flutterby, I had the fluorescent yellow for a while when I started on full HRT. I googled this and it came up with a discharge colour chart, this colour was within the normal range so I didnt worry too much and it did eventually change to a lighter more recognisable shade! Previously I'd been on just local oestrogen but struggling and very dry so I assumed this was my body's attempt to start producing lubrication again. I'm just back on local now, 5 a week Vagifem and Ovestin every night on the outer bits and sometimes internal too. Dont worry about the discharge, thats normal and the Ovestin is doing its job.