Hi Dr, I am 22 years old and I have been on a low carbohydrate and moderate protein diet for 3 weeks now, so far i have lost 6kg. However, 3 days ago i have started to spot bleed. My last period was 2 weeks ago. I am currently on b/c and take them as directed, I also have PCOS . What is the cause of the bleeding and how can I stop this? It is going to impact my sex life with my partner. Regards Kim