I Am 43 This Year, As My Menstrual Cycle Started

I am 43 this year, as my menstrual cycle started to haywire for the past few years and I had decided to visit a gynae yesterday. So he prescribed me with a 3 months supply of Proglyton. If I start to take the 21 days Progyluton, the kind of side effects will be? I remembered my mum took some hormones pills in order to control her menopause and eventually she suffers from dementia.. I do not wish to follow her footsteps