If you played sims long enough then you know that sims can get dizzy or sick or feel unwell on occasion. You get them to drink some medicine, or orange juice, or healthy tea and what not. Would I want that to happen more often and particularly for female sims? Not particularly, especially as not all females experience the same period symptoms. As someone who has had period issues since my early twenties due to a bad thyroid, I have no interest in managing my Sims' periods or period issues. Tired of managing my own, thank you very much. Might be interested in weird pregnancy cravings as they can add a bit of challenge if you wish to fulfill. But in all seriousness, pregnancy in sims is just three days, not sure it really needs to be more interesting as you barely have time to be bored of it. Maybe if they extended it to three seasons then I could see the point of making it more eventful. Even so you could still arrange for some pregnancy photo shoot, baby room decoration, baby shower, etc. It's possible to make those three days interesting with current gameplay options. Woohoo is the birth control option, if you don't want a baby right away you can use that option. With the try for baby, I don't think they always get pregnant on first try, but I'm not sure why you'd want to add that kind of disappointment into the game where you try for baby and it doesn't happen.