If your kitten's tail is longer than this, it does indeed have a proportionally long tail. I was unable to find any information on longest tail on a domestic cat. I even searched the Guiness Book of World Records to no avail. I am afraid this is one record that no one ever though to keep.
Blighted ova are the cause of nearly half of all miscarriages that occur during the first trimester. Diagnosis of a Blighted Ovum. Examinations conducted on pregnant women early in pregnancy will seldom detect a blighted ovum, even with ultrasound. It is only later, after the baby is supposed to have grown large enough to be visible (which should be by the sixth week of pregnancy), that a diagnosis of blighted ovum can be made.
You can also begin testing for pregnancy as early as 7-10 days past your ovulation date with an Early Detection Pregnancy Test. If fertilization does not occur the egg dissolves after 24 hours. At this time your hormone levels will decrease and your uterine lining will begin to shed about 12-16 days from ovulation. This is menstruation (menstrual period) and brings us back to day 1 of your cycle. The journey then begins all over again.