Is Regular Periods A Cause For Concern Even After Crossing 50?

I am a female of age 51. I was born on 28/10/1969. I still have regular periods and no period gets missed. I was very very serious in 1992 and I survived so I can say that I had a rebirth in 1992. I had basically changed myself to survive at that time. Is because of my rebirth that I have no sign of menopause till now? Is it something I should worry about?