It doesn't matter what other people think, only you can know how you feel. I was worried once- I'd read about a form of tablet that helped people with extreme anxiety. I thought I'd be wrong, that I was just diagnosing myself via the internet, but I went to the doctors anyway.
She agreed with me, and I started prozac to reduce anxiety. I was in the same way- I'd feel really bad, then talking about it etc...actually I feel ok, guess it was just that time of the day. I tried to tell myself I was just being stupid, but in the end it's better to just go-
What if you aren't overreacting? You know in yourself you're unhappy. It doesn't matter how many years you go through, it won't get better without action or at least some sort of change.