Ever since I was younger, I've always gotten weird thoughts about devastating things that I was 100% convinced were going to happen. It started off with typical kid stuff when I was younger, like the world ending in 2012. Silly stuff I know now wasn't going to happen, but was convinced when younger. Now I'm older and hearing all this news about what's going on in Ukraine. My brain immediately goes to the worst possible case scenario when I hear the US is getting involved. Now all I can think about it the world ending in a nuclear war. I know this sounds stupid, but I just get a weird tightness in my chest when I think about it and I've just been trying my best to ignore the topic the best I can. I've also tried reasoning that no country has launched a nuclear missile with super devastating capabilities in years or the reason of "mutually insured destruction". I'm just scared and worried and it may just be for a silly reason. 
Mostly looking for some reassurance or advice on how to cope 💕