IVF can maximize your chances of pregnancy per month. Medications increase the number of egg follicles that grow to the size where they can be fertilized. So rather than just one egg a month being exposed to sperm, there may be many eggs available.

However, the medication can only grow the follicles that are available. The number of follicles available is a function of the biological age of the female. That biology, directed by our genetic code, determines a set lifespan for the eggs. There is also a high correlation between chromosomal errors in the eggs and the advanced age of the female. So even if we can recruit a large cohort of eggs, the question remains as to which of those are chromosomally correct and able to produce an ongoing pregnancy.

Statistically speaking, female fertility begins to decline around age 35. That means over the broad population pregnancy rates drop. Where you are currently in that decline is something our physicians strive to determine. Age is a factor, but we are all individuals within that statistical realm. So even reporting pregnancy statistics for the 42 yr. old may not give you the specific information you seek.

The best way to answer your question is to have your hormone testing done and a transvaginal ultrasound performed by an experienced reproductive endocrinologist.
You can then be given a more precise answer which addresses your specific situation.