Ah @Carefree1 I can understand that, it's just there like a dark cloud, the sad dates and milestones are always difficult to deal with.
This month, I'd have had a 1 year old child at home had my first pregnancy succeded. I don't think I'll ever fully get over this. It's also a very difficult reminder of how long this journey has been for me and DH.
Some dates are there forever, but with the pregnancy milestones, we have to separate them, our current pregnancies are entirely new pregnancies biologically. No two pregnancies are the same. Try to focus on that if you can because it's a fact. I find thinking this way helps me with grounding myself and reduces my anxiety. It's so easy for our brains to just run off and spiral into worries that the story will repeat itself, but in reality every story is different and we should only worry about our pregnancies now, not the previous ones. Easier said than done, I know.
Are you using any relaxation methods? I might do some meditation, I had 2 months of it through work and found it super helpful.