What Are The Chances Of Regular Menstruation After Taking Lupron Injections?

Doctor, I am 43 years old .I had a problem of endometriosis and fibroid. I undergone a D&C last October and after that I took lupride injection for 4 months till last month, i took a scan yesterday,in that my endometrium measurement is 3mm, will my periods return back,my last periods was on october 2014