Coincidence? Sorry if this is long winded!

In 2006 (15th October) I lost my dad in a road accident when he was 36, I was 15 (13th May)
I’m now approaching his age, which is terrifying me given these weird date/ age coincidences.
Last year my son turned 15 (11th May, 2 days before mine) his dad turned 36 (12th October) two days after my dad’s anniversary. Both being 2 days before my own birthday and my dad’s death anniversary. Fair to say I scared his dad reminding him of these dates/ages and how weird it all was.
It may all be some freak accident, same ages, more or less same dates, but it’s eating me alive and has done for years.
Next year I turn 36, none of the ages or dates will coincide with this but I can’t help to feel an impending doom, the closer I get the more worried I am.
It’s bothered me for years but I feel it getting worse. More anxiety, sadness and grief.
Has anyone else ever experienced something like this, strange dates or ages?
I might be self sabotaging thinking about all of this but I’ve even gone as to find out the dates between my dads birthday and death, so work out what date I need to get to, to dodge it.
The sadness and grief I feel towards it all puts me into a pit of despair almost.
I feel like I’m waiting to die.
* I don’t expect anything from this but I can’t be the only one having gone through something like this. I just want peace but still haven’t on 19+ years