Hello, I Had Pelvic Ultrasonography. Got The Result That The

Hello, i had pelvic ultrasonography. Got the result that the cause of bleeding heavily since last month is a bulky uterus with post wall fibroid of 3.8-3.9 cm.Extraction of uterus recommended.My gynae has given me Primolut N for 21 days so to stop bleeding.Can i use this medicine for longer time.
I had undergone 3 surgeries before. Cervical tumor near brain region in 2010 and in 2011 its remaining portion.In 2015 removal of gall bladder and now this.....
please suggest me.I m really worried. I am 42 ,have 2 kids,younger is 13, well i am a working women.