My teenager has had a fever since Sunday. When I took her to the Dr. Wed., he gave her an antibiotic because he thought it was strep. He didn't do a culture because he doesn't trust the accuracy of the quick one and said by the time the culture grows she would be done with the Z pack (penicillin allergy) he put her on. Now, Friday, she still has a fever and I wondering if it is the flu and if so, how long will this fever last?! She was without fever for awhile yesterday but it's 102 this morning. I'll probably take her back to the Dr. today. Thanks for any help.