Partner not supportive

When I was diagnosed with lung cancer early in 2023, my husband was very supportive and kind.  I was nothing short of terrified to be honest and his kindness kept me afloat.  I had a lung lobectomy to remove a small tumour and was overjoyed to be told there was no indication of cancer having spread and I would not need any follow up treatment.  After discharge from hospital I had a quite severe reaction to the pain medications I was given for the 2 weeks post discharge.  I am still dealing with the consequences of that some 5 months later.  To cap it all 2 weeks after my lung operation I had a bad fall while out walking and broke my wrist and displaced a bone.  This was when my husband's attitude seemed to change almost overnight and he began to be irritable and impatient.  Almost as though it was one thing too many and he just lost interest so withdrew emotionally.  So I've just got on with things on my own since then.  The reason I'm posting though is that my recent CT scan has picked something up which knocked me for 6 - they're not sure what as it's too small, it could be nothing - so I'll be monitored with 3 month scans.  My husband has zoomed in on the fact it might not be anything and is ignoring everything else the consultant said.  He keeps telling friends the news from my scan was good and it was partly, but not all .   I understand this may just be his way of coping.  What I keep thinking though is if I do end up need chemo and/or radiotherapy how tough that's going to be with a partner who's just not supportive and who I can't talk to at all.  I feel isolated and scared.  Is there anyone else out there going through a similar experience?