The last way to get a gay Sim pregnant is to use the “spouse” cheat.
The next way is to use a mod that adds a “try for baby” interaction to same-sex couples. To use this cheat, type “testingcheats on” into the cheat console, followed by “sims.add_buff buff_pregnancy_inlabor” and the Sim’s ID. This cheat will allow you to impregnate any Sim, regardless of their gender. The first way is to use the “ force pregnancy” cheat. There are a few ways to get a gay Sim pregnant, but they all require the use of mods or cheats.