DS is 15 months, still nurses quite frequently at night, and usually wakes with 2 soaked hemp inserts in his diaper. This morning the inserts were practically dry. He may have had one small pee all night. He nursed like usual during the night and I have no reason to think he wasn't getting milk. He's been mildly feverish for a couple days now but it's not a very high fever. He drank a typical amount of water for him during the day yesterday--sips here and there throughout the day. Should I be concerned?