When does the gender of the baby get decided?

Good to know, thanks!

Since MCCC (Mod) can determine gender at time of conception I was under the impression gender was determined then. You can influence it until the moment of birth however.

For the record, it doesn't matter what you eat in real life. The sex is determined at conception according to the sperm. But now I'm curious because with mcc the pregnancy seems to be set in stone. I often check to see what my sim is having to plan out names or rooms and it's never changed thus far for me.

I never have a failure on gender when using the carrots or the strawberries. Works every time. I don't know how many to feed the mother, so I just feed her many.

It's not set in stone with MCCC, first of all you can change it using that. Also if you influence it with the carrots or strawberries it does change. I've done it many times. Three of either seems to do the trick. I never even use the music and have always been successful.

I also use MCCC and can tell right away what gender(s) the babies will have. So far it has not changed for me if I leave it alone, but in cases where my family only has girls/boys for generations, I've made the mom eat carrots or strawberries to change it. That's always worked for me.

I just played and my sim is in her 2nd trimester. Savef. Then had her doctor husband determine gender and got girl twice. Third time had mom eat 5 carrots and listen to alternative music before determining gender. Got boy. Natural gameplay no interference

It's determined at conception. There was a bug awhile ago that sometimes made the gender shift I could never figure out if it was mod failure or just a bug, but it's been gone for awhile. You can of course change it through actions, but I have never tried through the in-game actions. My babies always come out like MCCC's scanner says they will. It's not set in stone at conception, but the gender is chosen then. It's just "set" after birth so long as you didn't influence it.

After some testing I do believe it's fairly set at conception - but able to be influenced!

I had a save half a day before my sim gave birth. During the pregnancy I carefully avoided carrots, strawberries, radio, and tv. I restarted the game many times to test the gender.

7 times in a row she gave birth to a girl. On the other 3 attempts, I had the sim eat carrots and listen to alternative music. Twice, she had a boy, and once she had a girl.

That many only be 10 times but I think it's fairly reliable results!

Well, we already know the gender can be influenced through food and music. But it seems that the number is also malleable, because one time I took a peek using MCC and it said 1 boy baby, but they ended up having a boy-girl pair at birth.