girl on girl (pure) is avoidable, but since its a harem game. FFM includes a sexual act with girl on girl like kissing, I plan to add that so... I think that isn't optional or optional in some circumstances. Tbh these tags will be added in the future but still far away. So I don't decide how to fit this tags in the game yet.
About the pregnancy, I don't know yet. I've explained that in the other comment... Maybe just a pregnancy at the end of the game.