Hi all, FTM here and I have an 8 week old who has been sleeping with the same sleep sack/bag/swaddle (whatever you want to call it) pretty much since Week 1. With this time of year’s weather, we dress him in just one layer of footy pajamas under the sack (it’s a TOG 1 sack) and our house is kept at 68 degrees. This combo has worked perfectly for the last 8 weeks. But two nights ago during a diaper change (in the middle of the night) I noticed that his chest was unusually warm. I then noticed that the back of his head/neck was sweaty. I double checked the thermostat and house temperature was same as usual. I checked HIS temp worried about a fever, but nothing. I just left his sack open to cool down for about 30ish minutes, and then zipped him back up and put him back to sleep. A couple hours later he woke again, I picked him up, and he was even sweatier! Checked temp again- no fever. Throughout the day he was his normal self. No sign of illness or anything that would explain it. I was thinking it might’ve just been a fluke. Last night, I dressed him in even lighter pajamas just in case, but same sack/swaddle. Sure enough, same thing. I picked him up in the middle of the night for a feed and his entire back was sweaty. I turned on our ceiling fan to cool him and the room down, but the thermostat still showed it was 68. So bizarre.
So my question is: has any one else’s newborn had a change in sleep temperature without any other environmental factors changing? Has my son just suddenly become someone who runs hot seemingly overnight?
And yes I plan to ask his doctor. We have an appointment next week anyway, but was curious in the meantime if something similar has happened to anyone else ?