Just wanted to say, having Egg-white
CM is not always a good predictor of
ovulation. I am a perfect example of
this. If you have 28 day cycles, it would have been too early for you to have ovulated. Usually ovulation occurs around Cycle day 14 (CD1 is the first day of your period.) and your luteal phase is typically 14 days also (if you have a typical 28 day cycle) and at the end of 14 days would be your period. Cramping can be caused by a number of things not limited to pregnancy.