Morning all! I have a question for anyone who would like to help. Has anyone seen a variation in their low high and peak levels when using OPKs? By this time last month I was seeing the blinking smiley.. again today was a zero again. I'm having that egg white stretchy discharge and I'm day 13. My cycle was 32days. The month before it was 33. I did travel last month so I may be a bit off. Anyone have suggestions or simaler experiences ?