Irregular cycles
If you think you may have fibroids
Pain during your cycle
Unusual bleeding during your cycle
No temperature shift for a while
Don’t have any dry days
Pain during intercourse
Limited fertile-quality cervical fluid
Unusually long cycles
How menopause affects charting
Luteal phase is less than 10 days
Spotting before menstruation
Very light or heavy periods
Dark brown or blackish spotting at tail end of period
Unusual bleeding
Spotting after intercourse
Continual sticky cervical fluid day after day
Continual wet-quality cervical fluid day after day
Absence of any eggwhite-quality cervical fluid or only water-quality
Patches of wet cervical fluid interspersed over long cycles
Wet cervical fluid well after ovulation
Wet sensation or eggwhite before menstruation
Infection masking cervical fluid
Wet cervical fluid found at the cervix but not at the vaginal opening
High temperatures during period
Higher or lower-than-average waking temperatures throughout cycle
Ambiguous thermal shifts
Temperature dip before the rise
Temperature below coverline well after ovulation
Drop in temperature day before period begins
Fewer than 10 days of high temperatures above the coverline
18 or more high temperatures after ovulation
Two levels of high temperatures after ovulation (triphasic pattern)
Dropping temperatures after either 18 high temperatures or a positive pregnancy test
No thermal shift
Outlying temperatures
Erratic temperatures
Weak thermal shift whose 3rd temp does not reach 3/10ths above coverline
Temperatures that rise one-tenth degree at a time (slow-rise pattern)
Temperatures that rise in spurts (stair-step pattern)
Temperature that drops on day 2 of the thermal shift (fall-back pattern)
Fever
Cervix that can't be found
Cervix that never fully closes
Bumps on the surface of the cervix
Pain or stinging during intercourse
Midcycle spotting
When taking accurate temperatures is not always possible