Cycle adds menstruation and woohoo risk as problems your sims must deal with. Trying for babies is no longer so easy, and having a night of ecstasy with your partner is no longer so safe.
For more general information about this mod visit its mod page.
https://www.neonoceancreations.com/mods/s4/cycle
If you want to download this mod you should visit the files tab in this mod's page.
Download