My doctor's nurse called after lab work done before appointment. She stated I needed to cut back because I am hyperthyroid ) my TSH was 0.17. She didn't mention my Free t's, but my FT4's are rarely over the middle of the range, and my FT3's most of the time have been below range. In other words, I have low tsh and t3. I have been diagnosed as a hashimoto patient, and did not start with a suppressed TSH. I don't understand why I have to be so low to menstruate. I normally take 112 mcg of levothyroxine (T4) and 5 mcg every other day of cytomel (T3), and alternate with 100 mcg some months of the year (seasonal) . Recently, I felt hypo so I modified my dose, about a week before bloodwork to see if I felt better. I went down to 100 mcg, but I took T3 daily instead of every other day. I got a period within a week, that's when I made the appointment and got tested. I had not had a menstrual cycle since October. I did this because I was feeling very hypo (cold, fatigued, broken nails, swollen upper lid (major sign for me) and body aches). I am seeing my doctor on Thursday March 14th. I have classic signs of central hypothyroidism, however my pituitary gland hormones have tested normal in the past. I have a slight elevated growth hormone, NO PCOS, reactive hypoglycemia, B12 deficiency and enlarged red blood cells (pernicious anemia risk). I don't have signs of hyperthyroidism at all. I had to cut my dose to half until my appointment, and I am already sleeping 10 hours a day. Why is this happening? Any ideas? I am worried because these cuts have shoot up my prolactin levels in the past. This has been a roller coaster for the last 4 years since I had a fever last 6 weeks. My hormones were cut due to the fever and then my dose had to be almost tripled after that. I never had an explanation for this either. I went through I hyper stage and then my hypo got worse is all I know. Every time my TSH is suppressed to almost zero is when my menstrual cycles are normal. My reproductive endo mentioned I have low progesterone levels even when I menstruate and thinks I need more T3. Needless to say this causes fertility issues as well. I don't hink cutting a dose so drastically can be a good thing, even temporarily. Any thoughts I would appreciate them. Thanks