how do u get ur sims to have baby или do it?

Ты could adopt them.
или if Ты mean make the sims have it themselves,you have to make them Woohoo или Try for Baby after their in a relationship.

They have to at least be romantic interests - in addition they have to think that the other person is "extremely irresistible" (comes after flirty and then alluring). After that Ты can select woo hoo или try for baby.

If the couple is married или engaged (probably even if they are boyfriend/girlfriend) Ты can bypass all that and make both sims "relax" on the same bed. Then Ты can just make them cuddle and then woo hoo или try for baby (it's usually best to make them Kiss and then make out first to get them in the mood).

They're also еще likely to conceive and just do it in general if they are both really happy and not in need of any essentials (hunger, tired, need to use the bathroom).
Good luck!

I think the term of do it in sims is 'Woohoo' XD sorry LOL but yea what they said

WOOHOO!! LOLZ?