Requests from work re sick meetings

Hi everyone.  This is my first post on this site . I have just had a request from my NHS employee to attend a supportive sick review meeting next week.  I was diagnosed with breast cancer in April this year.  My first lumpectomy was 10 May and needed a second one to gain clear margins 21st July.  In between both ops had quite bad infections.  Due to these there has been a delay in my chemo.  I started my first cycle on 7th Aug (the day after mum's funeral) and three days before my dad's admission to hospital. (out now) every 21 days for 6 cycles followed eventually by 15 radiotherapy.  I'm not trying to portrait a sob story, as I consider myself to be lucky., but am unsure how to react to a request from my NHS employer to attend a supportive sickness review meeting next week.  I have been in contact with my employer during this period.  The only thing I have replied is say it would have to be at my home because of infection etc.  I feel a little anxious as I don't know how I will be.  For those of you on chemo you will know each day is different.  I don't know yet how my hair etc will respond.  Feel so confused.  Just wondering at this stage what they want me to say and do? Thanks