question: Hello doctor, I am a 21-year-old female. For the past four months, my menstrual cycle was not right. It lasted a whole month and was heavy by the end, and it stopped after I took some vitamin C. Then, after one month, it started again and lasted for two weeks (stopped after I got some vitamin C again, and I was not taking any before). After that, it disappeared for two months, and started again, except this time it appears for a day, the next day it is gone, shows up every couple of days, and there was a very little of blood. None of this ever happened before, although my cycle was never exactly every 30 days, everything was fine. I am not sure what could be causing it, it might be stress related, but I do not have an opportunity to see a doctor for the next three months. Currently I am on Omep 40 g, for duodenal inflammation and Cinnabsin N for sinusitis.