I had a very similar experience, and I also didn't want to run to the doctors right away. I came across an article -
liven app reviews - I decided to try it. At first it seemed strange, but there is a really cool system there. There are surveys, a mood tracker, and you can plan your day so as not to overload yourself. Short courses on anxiety were especially helpful. They explain where it comes from — for example, perfectionism or low self-esteem. And the app also recommends pleasant things like "walk the dog" or "write down 3 gratitudes." I began to better understand where these states come from, and it really became easier.