When to take back to Dr

Julie

My 3 month old has been sick for 2 weeks now. I took him to the doctor at the very beginning and he said it was a virus and that it should resolve. It just may take time. Well today we took his temp and it was around 100, which I guess isn’t considered a fever? Idk. Should we take him to the after hours care tomorrow or wait it out and see how he’s doing Monday?