Hi I'm 26 years old and I previously have been on quasense a continuation of active pills for 3 months without a period , I have been on this bc for years and I recently switched to microgestion 1/20 fe due to side effects of the quasense. When I reached the last week containing the iron I did not start my period,I didn't start until my first week of active tablets of the 2nd month. I have now reached the last week of my second month and I still have not started my period, I will be starting my third month Sunday. I am sexually active. Should I be worried?