How to Have a Baby in The Sims 3 (Complete Guide)

1. Romance → Try for Baby

• Two Sims (Young Adult+) with Romantic Interest → Partner → Fiancé/Spouse (marriage not required but boosts chance).
• High Romance bar + "Try for Baby" interaction on double bed / haystack / hot tub / rocket ship (Ambitions) / sarcophagus (World Adventures).
• Chime sound + "Try for Baby" moodlet = success. Base chance ~80% (higher with Fertility Treatment LTR / Hospital / Lucky trait).

2. Pregnancy (3 Trimesters = 3 Sim Days Each)

• Symptoms: Nausea (morning), backache, cravings, mood swings, belly growth.
• Care: Eat fruit/veg (influences gender—apples = boy, watermelons = girl, per community testing), read pregnancy books, prenatal massage (Spa Day), avoid stress.
• Ultrasound: Hospital (if Get to Work) or "Determine Gender" interaction (base game) reveals sex.

3. Birth

• Hospital: "Go to Hospital" → 2–3 hours → returns with baby (bassinet).
• Home Birth: "Give Birth Here" on bed (base game). Same outcome.
• Twins/Triplets: Random (~10% twins, ~1% triplets). Fertility Treatment LTR (40k LTH) → ~50% twins.

4. Baby → Toddler → Child → Teen

• Baby (0–3 days): Feed, change, cuddle, play. Needs: Hunger, Hygiene, Energy, Social.
• Toddler (4–7 days): Learn walk/talk/potty. Skills: Thinking, Imagination, Communication, Movement.
• Child (7–13 days): School (8 AM–3 PM), homework, skills, friends.
• Teen (14–20 days): High school, part-time job, dating, driving (Generations).

Cheats (testingcheatsenabled true)

• sims.add_buff pregnancy_inlabor → instant labor.
• cas.fulleditmode → shift-click baby → edit traits/appearance.
• bucks.unlock_perk PointsForFertility → free Fertility Treatment.

Expansions Matter: Generations adds strollers, midwife, imaginary friend. Parenthood (Sims 4) style traits not in TS3.