Fatigue, flashing in the left eye, worsening migraines: I have ...

Fatigue, flashing in the left eye, worsening migraines: I have been on Arimidex since July, 2007 (after lumpectomy in January 2007, chemo, a mastectomy in same breast in August, 2007 followed by radiation) and seemed to be tolerating it quite well, except for the fact that I wanted to go to bed at no later than 9PM every night. Recently, however, I had noticed retinal problems in my left eye (could also be a result of my nearsightedness and my age --61) and worsening migraine attacks which I could not relieve completely with my usual medications. I did research on Google and found that Arimidex could indeed lead to worsening of headaches and perhaps lead to retinopathy as well. This morning I decided not to take the pill and called my oncologist's office to find out what he thinks about stopping it for a while. I have also made an appointment with a neurologist since I haven't had a brain MRI since 1987 (to rule out other causes than migraine for my headaches).