Is it necessary to take folic acid tablets along with thyroxine 50 mcg to improve chances of getting pregnant ? I have thyroid I have been told to take thyroxine 50mcg one tablet a day,I got my periods on22nd aug 2012, i have also done pregnancy tesy,its negative,I want to get pregnant ,me&my husband have planned for ivf ,I want your advice whether thyroxine tablet is correct and should I start taking folic acid,if so then what tablet to take for folic acid,I m very worried what to do for my periods,help me,im nt able to sleep in the night as well.i am taking thyroxine also regularly.i have yet nt got my periods,what to do to get it and what medicine should i take for folic acid