About 6 months ago my ivf clinic checked my thyroid levels (2.5 I think) and as it was on the borderline they prescribed my 25mcg of Levothyroxine which worked well. Whilst waiting for ivf clinics to start up again I used some old letrazole (prescribed by different gynaecologist) and on cd10 of the same cycle happened to have my thyroid re-tested and it's now 3.4 so ivf clinic has upped my Levothyroxine dose and want to re-test levels in 6 weeks. This may mean I have to wait for my FET. I haven't mentioned the letrazole to the ivf clinic as I didn't think it was relevant, but after a bit of googling it looks like there can be a link between letrazole and increased thyroid levels. Most of what I found is cancer treatment related and has just confused me. Has anyone had an issue with thyroid levels when on Letrazole?
Sorry for the long post!