I am 63 years old, last menstrual cycle when I was 37 years old. Within the last year, I ve had a slight pink discharge once a month for a total of 5 times. Each one lasts less than a day, often with the associated cramps I experienced when I was menstruating regularly. The sour odour is there as well. However, today is day two of the very light discharge. The only meds I take are HRT (estrogel and prometrium )and Zoplicone. What is my body trying to tell me?