Q: At what point in my menstrual cycle should I test with the fertility microscope?

A:  It's suggested to start testing several days before your expected fertile time period. Your fertile period begines about 6 days before ovulation. So you may want to start checking your saliva about a week prior to ovulation. In a 28-day cycle you expect to ovulate around CD 14r, so start testing on or about CD 7.