Dear Doctor, Im 39 years old woman who is trying to conceive for about one year now. My scan reports says my overies and ovulations are fine. At present im taking siphene 100mg tablets from day 2 to day 6 for the past 5 months. I had irregular periods some years back like once in 2 months. In 2008 After taking yasmin tablets for about 6 months periods became normal. As of now i get my periods around 30 to 32 days. Am i having irregular periods? how much are the chances of getting pregnant with siphene 100mg?