Thank you all for your supportive replies.
I am home from a break from sitting at dad's bedside in his care home. He was discharged last Monday after the blood and urine tests showed that he did indeed have levels of paraprotein but in "insignificant" quantities. However without the biopsy the doctor could not diagnose myeloma and we were advised to continue as before but to monitor for infection.
My sister came back from her holiday on Sunday and thank goodness she did. Dad's condition has deteriorated so quickly and he is not long for this world. He is comfortable, settled but not eating or drinking and as we're taking this break, his carers are taking it in turns to sit with him so they can call us when it is imminent, suggesting it could be tonight.
My time in your world was brief but very scary. I was amazed at some of your stories and my heart goes out to each and every one of you touched by this illness. And my admiration for dealing with it as well as you do. I wish you all well on your journeys.
Pam xx