I don't know about most of you but I have a horrible time getting an accurate reading on OPK's. I talked to my aunt, which is an OB nurse and she said to try Fertile Focus. It's basically the saliva test, but she has heard good things about them and they have been referring it to women. If you are interested You can search for them on Ebay, they are about $25. The good thing is that you don't have to buy OPK's anymore!!! Just thought I'd share the info.