Although IVF treatment for infertility is typically performed on patients who are thought to have a very low to nonexistent chance of conceiving naturally, spontaneous conception following IVF discontinuation has been reported in up to 29 percent of couples within 6 years of treatment completion. Spontaneous conceptions can also occur after the use of donor eggs or embryos. Therefore, it is recommended that couples who have gone through fertility treatments consider adopting either natural parenting methods or using frozen embryo storage facilities to preserve their chances of pregnancy. During IVF treatment, women's bodies are subjected to multiple hormonal changes that may affect whether they become pregnant even after the treatment has been completed. As well, stress and other factors not related to the treatment itself may influence whether it succeeds. All this adds up to the fact that neither you nor your doctor can predict how you will respond to treatment, so it is normal to want to know what would happen if you got pregnant while you were going through IVF. It is possible to get pregnant while taking part in IVF treatment. The likelihood of this happening depends on how long you've been off the pill/patch, your age, the type of treatment you received, and whether you became pregnant naturally after your last cycle of IVF. If you do get pregnant while undergoing IVF, there is a possibility that your baby may not grow properly due to extensive exposure to hormones from multiple sources (including the drugs used to stimulate egg production).