I get married very soon to someone I love deeply, who makes me feel so loved. We are busy with exciting things, obviously have normal life stress too so overall a lot going on, but at times I feel an awful anxiety and pain in case one of us dies soon 
My DP is incredibly precious to me, and I can't deal with the idea of us being separated by death too early. I lost my mother at a fairly young age so maybe I'm scared in case I lose the person I love best in the world all over again.
Aibu weirdly anxious because of the grief in my past, or is this something that came up for you before you got married?