hi ladies, i'm just new to this temping thing, this being my first month. been using in conjunction with opk's. basically i got a +ve opk last wednesday, which was a week later than usual, since thurs my temps have been gradually increasing, however this morning there was quite a big drop ie. y'day was 36.78, this mornings was 36.36. any ideas on what this would be from? i know its too early for anything else but just wondering.