Anxiety!

I'm 8w4d with twins and I have a 2 1/2 year old son. I'm noticing in the evening I start getting anxiety. I'm pretty sure it's from worrying about delivery, possible nicu (which the closest one to me is 3 1/2 hours away 🙄) and of course having twins. Ugh! Does anyone have any recommendations on how to reduce my anxiety? Please don't tell me to "just not worry" I'm usually a very calm person. I work in the medical field so I know way to much for my own good 😕