Can you still go through menopause years after a hysterectomy?

In 2012 I had my uterus and both ovaries removed.  I was 39.   I didn't immediately go through any symptoms like hot flashes that kind of stuff.  It was about a week before I started premarin because my dr wanted me to take it.  I took it for several years and then took myself off.  I am now 45.  I have not had estrogen since 2015.  Insomnia is bad, anxiety is higher, and depression has been around more.  Nothing in my life has changed.  I don't know why I all of a sudden I don't feel like my old self.  I am going to see my old Gyn on Monday.  I am sure he will not be happy with me going off the premarin.  Do you think it is possible this is menopause or the beginning I am going through?

Most deffo my periods stopped when 42..no symptoms ..am now 51 and last year been suffering with nite sweats and insomnia..hi levels of

Anxiety ..has jus recently started calming down