What Are The Uses And Side Effects Of Norlevo Tablet?

i have taken norlevo last night to bring on a period as i am not pregnant but l havent had a period for 2 months and the one before very light. My estrogen is very low <44, im 42 years of age, my dr think l might me peri menopausal..?? we are trying to bring on a period to bring my hormones into line. how long after taking this tablet should l start bleeding?