i started as soon as i felt wet. Which was about CD6, and I have a 33 day cycle. It was my first month though using them and doing any charts so i bought a load of cheapies so that i could do them every day. Didnt want to miss my surge!
Got my positive on CD16, so i think next month if i dont get my BFP I will leave it till about CD12 before I start again. once I have a few cycles under my belt that are all pretty similar, then I might ease up a bit!
I like peeing on sticks though........xx