I’m in desperate need of help..

So last night around 11 my baby’s temperature was 99.1 we were asleep and she was swaddled . Well it went down everything seemed fine . Than at 6:30 today her temperature was 99.4 again she was swaddled and asleep. The house stays at 70 degrees . I feel like I don’t know how to dress my baby. I stay pretty warm all the time so I can’t dress how I feel because I feel the same majority of the time .