Anyone else obsess death of a loved one

I’ve been perturbed for a couple of months now with incessant thoughts about aging and dying. I really am not sure what to do. This feels like other OCD themes, but also really different, because this time, what I’m afraid of is sure to happen. I will either die, or age and then die. It’s been so difficult to enjoy anything lately. I just want to pull a blanket over my head and wait until death comes. Has anyone else felt this way? I feel quite alone. I am trying to enjoy life, but I just remember that it will all be gone in a flash. Nothing really seems to help me feel better. The only escape I have is in my dreams where I can fantasize about never aging or dying. Or at least being able to rewind the clock to have more time.

Few years back I went to a funeral when I come home I have developed irrational fear of death my legs were shivering I am unable to sleep at night my life become hell. I could not take food properly and irrational fear make my life worse after some time I developed blasphemous thoughts about God and religious figures and it becomes worse everyday was hell for me the fear was so terrific that God will kill me some numbers comes in my mind like next Friday I will died etc then my sister helps me in it that is just thoughts you are not doing then gradually I started living with them in between these thoughts used to come but I was normal but now again one of my loved one death trigger these thoughts again and I am suffering all the above mentioned stuff in a horrible way. I cannot sleep fear of hell blasphemous thoughts what will happen with be afterward the first night in grave everything is horrified me I don't know what to do death fear making it more worse.

My OCD has bounced around to a lot of different topics but my current spiral has been focused on existential dread - I have a lot of intrusive thoughts about my loved ones dying and not existing and about my own death and not existing anymore. OCD is trying to get me to find certainty in what happens after we die… and unfortunately I will NEVER be able to find certainty around this. This spiral started after the death of my beloved cat and then the almost death of my dog a week later. I think OCD attached to this idea that everyone and everything I love is going to die and I need to prepare myself for it and somehow KNOW what happens when someone dies. It’s panic inducing and really hard for me to sit with vs other OCD themes Ive had related to health, moral/hyper responsibility, etc. Anyone have this type of obsession around death of loved ones and how did you combat the intrusive thoughts and deal with the mental compulsions (rumination, avoidance, etc)?