[Dots]

The only downside i find is that its only on of the two that carry the baby and not both of them. it kill the element of surprising on who is carrying but ill take what i can get.

There is a mod out there call cmd command mod that let you set lots of thing in the game and one of that is pregnancy. I don't think you can set to ramdom the pregnancy in same-sex preg tho, but you can set if the initiator or the target or both will get preg. I personally do both since I love having lots pf preg men lol.
You can also set the pregnant rate and gender ratio in the city as well. I've made one of my cities to have only male and set a very high rate of same-sex marriage and the pregnancy which result in a city filled with pregnant men lol