I'm 32, diagnosed with Hashimoto's in August, currently on 75mcg levothyroxine. Have an appt with my endo next week for latest blood test result. See endo privately and a naturopath. I'm 6 weeks into this new level of medication and feeling really good - like myself again! Most of my symptoms have either completely gone or are hugely improved... except that my periods are still coming early - 23-25 day cycles and spotting for several days before my period. This symptom (and unexplained infertility) was what alerted me to my thyroid problem. Before this my cycles were very regular 28 days with no spotting. Does anyone have any experience of their periods/cycles regulating when adequately medicated? I have read that there is a link to low progesterone and hypothyroidism and am concerned that this is the cause of my symptoms.