Can you have some sort of PTSD from this??

Okay this is probably going to be a stupid question and in no way am I a clinical doctor trying to diagnose myself. But my question is, can one have PTSD or some sort of anxiety trauma even if it wasn’t you who was effected or there to witness firsthand? To me my version/definition of PTSD is to be someone who’s been on the battlefield and seen things or was a victim of DV for example. My story is I’ve lost 4 family members in less than 5 years and the most recent being my fiancée from a botched surgery gone terribly wrong and before that a few years prior, was my little brother dying in a plane crash about 2 miles from our house. Those two being the most tragic and the other two were grandparents from sudden illnesses/cancer. Again, not wanting to misdiagnose myself or slap on a label but both my brother and fiancées passing were very traumatic and damaging to me, even if I wasn’t there to witness firsthand, but have read their reports/descriptions (not trying to go dark here). I know grief definitely changes and messes with your brain and I can easily say that I am not the same person mentally like I was 5 years ago. Yes I’ve been on and off medication when I feel I’m doing okay and have spoken to therapists in the past, but thinking maybe I should talk to a psychologist to have a real diagnosis. A lot of things I can’t do anymore or desire even though I know I can if that makes sense, like just feeling stunted and getting frustrated of not being able to do the simplest tasks, like how one who has a stroke and is paralyzed but in their head they can do it, but their body isn’t communicating back. Anyways probably a dumb question but figured I’d ask