I have had very irregular cycles ranging from 36-46 days sometimes longer. It all kicked off since having my miscarriage in May as we conceived first month when I had a regular cycle. I took these tablets for 8 days at the beginning of my cycle then stopped as I needed antibiotics. I now have a positive ovukation test and it's only cycle day 18! last month I didn't get a positive untill cycle day 30. Here's hoping this has sorted out and we get our baby soon!