Can I delete the predicted period?

No, the predicted period and fertile window cannot be removed. Since it is predicted and not actual information, it will not be factored into the algorithm or affect the accuracy of the prediction. Think of it as a reference for your information. Once you record your period for the current cycle, the prediction will be overwritten. Make sure to pay attention to the pattern of the curve, as it is more important than the absolute value. Once you ovulate, you should see a sudden increase in LH concentrations, although the peak value can vary greatly. To clarify, even if the LH levels are relatively low but there is a substantial increase in LH levels, you can still be ovulating.