@iowachica, I'm sorry to read that you caught the flu. I hope that you are feeling better. I don't recall whether you are waiting for, or have already received your transplant.
From my experience, it is normal for me to take longer to get over anything like a cold, or bruise, or cut than my family or my pretransplant self. I also find that infection is a big concern and my local PCP told me in my early post transplant years to contact him anytime, and he even saw me without an appointment.! I also get tired more easily since my transplant.

Did you contact your doctor or transplant team? How are you feeling now?