Relapse scare- false alarms?!

Hi friends.

I’m 18 months in remission (stage 2a) and had a really tough follow up appt. My NP felt some enlarged lymph nodes and since i haven’t been sick, offered to do a scan. I freaked out, we decided to wait 6 weeks to see if this was just reactive before doing a scan. Within hours of the appointment i got a sore throat, and now a few days later i have a wicked upper respiratory infection. It makes sense now that my lymph nodes were starting to react to the virus in my body… but this experience really shook me. I have PTSD from my cancer diagnosis and see a therapist, but i’m wondering if false alarms like this happen to other survivors and how you cope?