The single most important factor influencing your chance of conceiving is a woman’s age.
If women are in their late 30s and 40s there is a lower chance of conceiving, as the number of healthy eggs produced declines rapidly as u get older, especially after the age of 36. If someone experiences premature menopause or is taking chemotherapy treatment, then there is the chance that the number of eggs maturation processes have on the lower side.
When a woman gets older her cells start to divide abnormally or maybe there is also a chance that the distribution of genetic material will be unequal which causes an increased chance of genetic abnormality. This indicates that the chances of getting pregnant or miscarriages will be on a higher side in the older women and also in a baby carried by these women with genetic abnormality such as Down’s Syndrome.