missed period

I’m not sexually active so it’s not pregnancy, but I’m worried about a sudden missed period. I was on birth control for two years but it caused my depression and anxiety to get much worse, so I stopped taking it and when I did, I had a regular period for six months until this month. Could this be just a blip in the system? When I had irregular periods before it was too often and very light. This is the first time I’ve missed a period in months but I am worried about it becoming a recurring issue. I do think my cycle is longer than 28 days but it’s been significantly longer than that this time.

I have been diagnosed btw. I’m only really worried because I don’t think I want to go back on birth control for anything, it made me feel so bad mentally and emotionally.