Mystery pee

SimoneSays22

So I put a BG 4.0 on DS last night with the regular MF insert and newborn insert inside. He woke up at 1:30 to eat and I checked his diaper and it was barely damp so I kept it on him. At 6 a.m. when he got up for the day, I checked his diaper and he had a small damp spot on his lower back on the side (he is a side sleeper). When I checked the inserts, they were wet, but not soaked and the back of the inserts were barely damp. How the heck did he get a damp spot on his back? I'm confused. Help please!

I might try a hemp insert tonight, but it seems like if the inserts aren't soaked, then that's not the issue? 

Overall, I'm still pleased with how his first night in cloth went! He definitely wasn't soaked and the diaper lasted 11 hours (with a small damp spot)!