What Causes Irregularities In Menstruation?

Doctor 1i am 24 years old and i got married last year but doesnot have regular periods and had urine infection and after I year had the surgery for ectopic on since the left fallopian was be burst open due to the embryo growing in the tube I had to undergo a sugery which involved in the removal of the left fallopian tube too. The doctor told me that the right fallopian