I had a biochemical chemical last year 2019 sept, my thyroid level (tsh) was 6.88 and vitamin D level was 6iu/ . I was prescribed with 50mcg thyroxine and vitamin d 60k for next 8 weeks, the TSH level on december 2019 was : 3 and was told by doc. That now I we can start trying for conceiving. I am still continuing my thyroid 50mcg and follic acid. We are still trying but no positive result. Please advice should i switch to 25 mcg as my levels were in control. I am also experiencing little pain in one or two finger joints in the morning and bach pain is much frequent.