I agree with others that think it might be that the girls are reacting to the pregnancy.

This is step by step exactly what Allen is doing right now. He will only pee in laundry baskets or blankets someone dropped on the floor. NOTHING else. He's telling me he's annoyed that the 3rd floor is closed to him (I dropped Minette off to her new home today, so hopefully this problem will resolve itself now that he once again has access to "his" room... will let you know if it doesn't work). I honestly think the girls are teeling you they are upset by something. Now its trying to determine if its something to do with the pregnancy or Samantha, etc.