The physical body affects the soul body directly and vise versa. Depending on the context of the situation, most issues with the physical body can be fixed with workings, deep cleansing and specific life practices. Asking the Gods for help is also a good idea, especially if it is a medical issue. Any alteration or damage done to the sex organs can impact you both mentally and spiritually as the Kundalini Serpent itself is very sexual in nature.
If there are no issues with the sex organs itself but you are not ready for a child there are natural ways to prevent pregnancy with herbs and Chinese medicines. Most pills harm the human body either way.