Appointment change

Hi. I had a mastectomy in December followed by 15 sessions of radiotherapy which finished 3 March. I was due to attend hospital 22 April for follow up after treatment but it’s now been changed to a telephone appointment on 16th April

I’m also waiting for a review of my previous mamagrams as my cancer is stage 3 advanced although only local. So I’m fretting that it may have been missed  

I understand why it’s a telephone appointment but I’ve gone into a blind panic  as to why it’s been brought forward. I’ve gone through the sensible thoughts of a cancelled appointment or that they are preparing for a huge influx of patients due to COVID but the dark thoughts keep popping up. 

Anyone else had their appointment brought forward?