Fatigue post immunotherapy treatment for melanoma

Hello,

I was wondering if anyone had any experiences of fatigue a long time after immunotherapy treatment had finished?  A lot has been written and discussed about the longer term impacts of cancer treatments such as chemotherapy and radiotherapy and how these can have an impact in terms of tiredness/fatigue for a long time after treatment but there doesn't seem to be much on immunotherapy (I guess due to it being relatively new). 

By way of background I was originally diagnosed with Stage 3 melanoma in 2015 and this spread to one of my salivary glands the next year - both of these were treated with surgery but then at the end of 2017 it was confirmed to have spread further and I needed to undergo immunotherapy treatment (a combination of nivolumab and ipilimumab - had to google those to get the names right!).  It was only after a couple of months that I had to stop due to side effects and then I was on a combination of steroids, immune system suppressants and antibiotics.  I felt fine once the steroids kicked in and even for a while after finishing all courses of drugs but probably since August last year I have been struggling a bit with fatigue.

I can usually get through days and weeks at work but I generally do feel pretty drained and a bit sick from over tiredness a lot of the time and it doesn't necessarily go away even if I have a few days rest.  It does vary - some days or weeks I can be pretty much fine but most of the time I do struggle and I was interested to know if anyone had any similar impacts from going through immunotherapy?  The consultants seem to suggest it isn't necessarily normal to get fatigue long term after the treatment so I would welcome anyone's thoughts on the matter.

I should add my most recent scans have shown no obvious signs of the melanoma so I am doing well (fingers crossed, touch wood etc.) in that sense - its just that I can't seem to get back to 'normal'.