Women may have problems having a pregnancy for a variety of reasons. These include:
Body weight far above or below the ideal level
Women who are very thin or very overweight may observe irregularity of their menstrual cycle. This has an effect on the success of pregnancy, since differences in weight may affect hormone production. Women who exercise a lot may have similar symptoms. Some women who are overweight have polycystic ovarian syndrome, a condition that affects egg production and influences body weight.
Changes in hormones that are needed to regulate the monthly cycle
Some women with infertility may have problems making hormones necessary for pregnancy, such as prolactin, FSH or LH. These hormones can be measured by blood tests, and treatments to replace or influence these hormones levels may be helpful.
Changes in the structures of the fallopian tubes or uterus
A variety of factors can affect the structure of the uterus or the fallopian tubes. The fallopian tubes are necessary to deliver eggs from the ovary to the uterus, where fertilization and implantation occur. Fallopian tubes can be affected by conditions like endometriosis or pelvic inflammatory disease. The uterus can be affected by these causes as well as fibroids, the uterus structure, or other factors.
Treatments for infertility depend on the cause. Sometimes specialized treatments are helpful for infertility. These may be stimulation of egg production with a medicine like clomid, in vitro fertilization, or selection of eggs and sperm with normal genetic material to facilitate a healthy pregnancy.