Hello I underwent FET last month but it failed. I had excellent embryos and endometrium also very good. I have regular periods. I am taking thyroid medication from past 1.5 years. Everytime I check thyroid levels it will fluctuate high and low and doctor adjusts dosage accordingly but it's always in the normal range from August 2022. Two weeks before embryo transfer we did check TSH and it was normal. Does thyroid alone effect IVF success even though it is in normal range? Can I try another round FET? We still have good embryos frozen