Hi
Sorry to hear your story, I lost my Mum just over a year ago to cancer 2 months from diagnosis to death and my Dad 2 years before 6 months from diagnosis to death.
Dad had lung cancer, he started chemo, the first couple of sessions were hard for him, as the chemo hit both bad and good cells. This was what was expected. His 3rd session of chemo (dad had chemo every third week) we saw him grow stronger, fatter, happier, healthly, driving again. Then Dad's heart rate doubled. He said he felt ok and looked ok. but last course of chemo delayed for a further two weeks. Had last session, went back to get results. Not worked. He was offered Radiotherapy and started the week after for 3 days.
First day Dad was rushed into hospital later in the evening as his heart beat was so eratic, we thought the heart monitor had broken. It was like someone typing in numbers between as low as 52 all the way up to 170 ish into the machine. It was horrendous to realise that was my Dad's heart.
Dad's heart was regulated, he was made comfortable and medicated.
But the medication caused other fatal problems if he continued with it. Catch 22 if Dad's heart problems weren't medicated he would die but if Dad continued with his medication, he would die.
He passed away a day later, heart failure first.
So from what I could gather, the lung cancer did not kill him, or it wasn't the primary cause of death.
So if it was his heart, then what caused his heart to fail? His treatment for his cancer is the only possible answer I can come up with.
If I think about it it would drive me insane trying to figure everything out in my head. So I don't think about it. Ultimately driving myself insane looking for answers would only make me ill myself and not bring my Dad back.
My Mum was different again, the chemotherapy excellerated my Mum's cancer and speeded up the time of death.
After chemo, my Mum went from walking to the toilet herself from her bedroom (not far) to having a catheter fitted in 6 days. And it never just happened overnight, Mum endured the slow painful decline little by little.
When I say slow, It seemed like forever to my Mum. After spending 5 days struggling to try and do as much as she had the day before, Mum was exhausted.
A week later Mum had Died. I thought my Dad died quickly (6 months), but 2 months? 2 months seems more shocking because the Doctors, Nurses etc etc all use 3 months, 6 months, 9 months etc etc as their guidelines when discussing sensitive issues.
Maybe my Mum's chemo did speed up her death, I don't know. What I do know is, that my Mum wanted to fight her cancer and she fought like ten men to get chemo. The chemo then made it impossible to continue with that fight. If the chemo wouldn't have fast forwarded Mum's death, she would have had to endure the same suffering but over a longer period of time.
I am in a way relieved that the chemo moved things along, Mum didn't have to suffer any longer than necessary then.
Hope this helps a little.