wow this post sent my anxiety through the roof too! Calm down dear. It's perfectly normal for your period to be irregular and stress is actually a contributing factor. I myself suffer from anxiety and OCD so every month is the same as you have described and I'm on birth control. Perhaps birth control would be a good idea for you? Birth control has regulated my period quite well and if you're worried about the anxiety of taking the pill every day, look into the Nuvaring. It's once a month and works really well.
Are you going to psychotherapy in conjunction with your medication? This might be something to consider. Counselling is the best thing I ever did for my disorders and now I don't check the closets anymore lol.
Honestly though, you sound perfectly normal and safe. Don't worry so much (i know it's easier said than done but that's what it comes down to in the end).