Hi ladies just wanted your take on something ... I (being a pretty big geek ) decided to do a bit of reading from scientific journals about effectiveness of different types of ovulation prediction. The study I read today looked at how effective different methods were at predicting ovulation. They compared OPKs, BBT charting and saliva testing with actual ovulation determined by an ultrasound scan. Apparently BBT charts were only accurate 34% of the time! OPKs on the otherhand matched ultrasound scan 100% of the time. What do you think? Makes me reckon temping isn't worth the hassle. I guess for people who can't use OPKs cause of PCOS or something it's useful but for the rest of us?? Just when I was getting the hang of it too! Anyway thought I'd share what I'd found. Would be really interested to hear if anyone had read anything about this too!