Requests:
1. Contraceptives? Maybe only have them unlock after the first pregnancy so players don't lock themselves out of content by accident or lock themselves out of the achievement hints. When you stop the contraceptives, the next sex minigame will be the impregnation one and start the day counter. My main reason for this suggestion is just to let the player focus on cumflation and not pregnancy, if they want. (Maybe a plug mechanic too?)
2. Maybe earn a little bonus money from some of the positive stream chats? Like they're donating extra because you did the elbow-touching thing or the mic to the belly. Plus it'd give an incentive to actually click the button.
3. Pills/upgrades/achievements to increase cum production/capacity?