Does Yaz Birth Control Tablet Cause Bowel Irritation And Irregular Menstrual Bleeding?

im on the pill called YAZ and ive been on it for about 6 months, i havent been sexually active for 4 months and have had normal periods in the past but this month i got period 2 days ago and its a browny colour and kinda sticky/clotty and doesnt smell right the only time its this colour is at the end... ive also experienced some bowel irritation, more so than usual (i get irritable bowel everytime with my period)