According to Baby Centre, the chance of conceiving at 46 compared to the average annual rate of pregnancy per cycle is less than 5 percent. This low chance of fertility is not just about the number of the eggs that a woman has but also due to the eggs released by ovaries in this age are likely to have chromosomal abnormalities.
Baby Centre states that the chance of conceiving after the age of 44 are very minimal, but the use of fertility treatments, donor eggs or frozen eggs increase the chances of conception. Using the eggs of the egg donor means that the miscarriage and chromosomal issues of that age group are applied to the woman carrying the child.
Parenting states that the percentage of women in the 45 to 49 category who have babies is .03, and that carrying a baby in this age is more difficult due to heart strain and the extra weight placing strain on older muscles and joints. More than half of pregnancies had by women after 45 end in miscarriage. After the age of 45, the chance of delivering an infant with Down syndrome rises to one in 30, and there is a 1 in 21 chance of a baby having a chromosomal abnormality.