Anxiety issues

It's really weird and hard to explain but when I think about being old or growing old I get a weird feeling and then a whole wave of anxiety and it makes me think that I'm not going to make it to an old age. I think of people in my life who said something about not making it to a certain age or having a feeling like they're going to die or just something that almost predicted their death and idk if it's part of my anxiety or if I'm predicting that I'm not gonna make it to an old age.. anyone else feel like this or know what I'm talking about ?? It's honestly becoming an issue in my life