I wen to Dr. on Friday b/c I have had fever, chills, fatigue, swollen glands, sore throat covered in white mucus that completely filled all areas of back of my throat. I am 33. He told me it was strep but didn't conduct a strep test. He gave me a Z-pack and my throat is better but I am still extremely tired. I had mono when I was 17 and I feel exactly like I did then do you think I should have some blood work?