I was on Microgynon from age 16-19 and just before my 20th birthday in June I came off in May and after that began having periods every 42 days. Then had a one off 28 day cycle and now my cycles vary in length between 28 days up to 42 days. I have never had irregular periods before I was 16. I am taking folic acid, I drink no alcohol (my husband does but not loads), we don't smoke, we take zinc supplements and have a very healthy lifestyle. We are making sure there is lots of sperm present at estimated ovulation- I'm finding it hard to time it. What can we do to help conceive??? How long will pill take to finally leave my body??