Klee - I used OPK's that I got really cheap online, but not from Lullaby. Mel actually recomended them. Maybe just email her and get the website, as I am not sure I can post it on here. Anyway, they were really cheap, I think about $20 for 50 or something similar. I know that the chemist ones are about $13 for 5, which was useless for me as my cycles were messed up when they came back. I had a 34 then 36 and then 44, so I wanted to use them as I had no idea when I was ovulating. It's hard isn't it when you are not sure what your body is doing. I also did the temping as well so that I could see when I had ovulated, so maybe do the Fertility Friend chart to keep a record. It's a bit confusing at first, but after a couple of days I got the hang of it, and it is a good way of keeping a record. Good Luck.