What can cause a period to be over a week late? I know 100% that I am not pregnant. Did I just ovulate late? We were planning on trying to conceive after this period ends, but it hasn’t even started yet so I feel very discouraged 😭 since having my son 15 months ago I’ve had about a 30 day cycle but I’m on cycle day 36 right now😵‍💫 we did not have sex this past cycle so I know I’m not pregnant