If your character is a male, usually when the couple turns 18, the female partner may usually go on birth control. After age 55, women will no longer need birth control.
If fruitless, you & your partner will have to wait until the next year to try IVF again. But, this is not always efficient as in some rare cases, people can still reproduce after a successful sterilization procedure.
Unspecified reasons may include having a disease, having a criminal record, having too many children, or having donated too many times in a lifetime. Sometimes the reasoning will simply show up as “No Sperm Needed”.
When you press Surrogate, a menu will pop up and present you with different women. You can check their stats and choose whether to use their eggs for the baby.
If they accept, you will have to choose whose sperm to impregnate the woman. If a surrogate fails at getting pregnant, your character can be reimbursed half of the expenses.
Some surrogate mothers will keep the baby for themselves and dishonor your contract; should this happen, your character may file a Lawsuit against them. To get pregnant you must not use birth control and certain diets or it will prevent pregnancy for females.
When pregnant, women may not have certain types of Plastic Surgery and may get Pregnancy massages. Other massages can be done, but run the risk of miscarriage, with Pregnancy the only one fully safe.