not quite the diaper contents i expected

I just put Lydia down for a nap, and changed her diaper just beforehand. I opened it up and found.... a little car. I asked her if she put a car in her diaper and she said yes. Thankfully, the diaper was only wet and not dirty so the little car was easy to clean up.

I am 18 weeks today and have a definite belly, but in certain clothes, I can still "hide" the pregnancy a little bit. I've been having some way-down-low cramps for the past couple of weeks, and I'm afraid that it is SPD. I have an appointment later this week, so I'll definitely be asking about it. But the symptoms list in that link really describes what I'm going through right now. It hurts to walk. Sitting down and laying down are fine, but as soon as I get up, it hurts again. It's possible that it could be just round ligament pain, in which case it will go away comparatively soon, but if it's SPD then it's likely to hang around until even after the birth.