Hi babylocks. The first thing you should do is adopt a child. To do this open the Store category, tap/click on Special Upgrades and tap/click Adoption Services. For the price of 4,000 coins you can adopt a child.
Next, check your adults Details page. Next to "Married" does it say "No"?
You are playing the iOS version right? Could anything have happened that changed the clock settings on your device?
In case you weren't aware, there is a separate forum for the iOS version. You can find it
here.
You may be interested in knowing that in Virtual Families 2: Our Dream House, if there are no children to inherit the house after the adults have passed, your game will not end. You'll get a message stating that your family has been lost and that you need to choose someone new. You'll be taken to the Adoption screen (not the Family screen) where you can scroll through all the peeps and choose someone new to start a family with. You will not lose any of the money in the Family Bank, nor will you lose any renovations, decor items, completed goals, etc.
This new person will be placed on the Family screen (as well as their spouse and any children they may have), will count as the Next Generation, but they will not be "branched" from the previous generation on the Family Tree. (This is also true for the desktop version).
Good luck!
