What time do you regularly take your temperature? Did you take it at the same time as normal or earlier?
If you took your temperature earlier than normal, it would be lower by about .1- .2 degrees every half an hour. If you only picked up the baby and laid back down and snuggled, and BF’d then your temperature would not have gone up as if you had been active.
So theoretically, if you took your temperature an hour before you normally do, it would be lower by .2 or even .4 than at your normal time for taking it.
Take your temperature tomorrow as regular, you should see it back to were it should be. But if your temp was up for 4 days prior, you should still be ok if you are trying to avoid pregnancy.