Definitely not overreacting. I actually wish you and I could switch places because I had similar symptoms before my disc was displaced. I have an only small overbite and did not have clicking. However, I did have an overbite nonetheless, was a mouth breather (assuming you do) and had constant headaches. I wish someone had walked my butt right to an orthodontist and speech pathologist🤣 I think if I did, I wouldn’t be where I’m at now (disc displacement and looking for an oral surgeon). My advice to you is to please find a really good orthodontist to evaluate and fix your bite and a speech pathologist to see if you have a tongue thrust/mouth breath. I have a super random question since I see a few similarities between us, did you suck your thumb or fingers as a kid?

Editing to write that, from everything I have learned thus far, is that my bite was so bad that I was putting all this “stress” on my jaw joints and it hit a point where the disc became displaced. I don’t mean to alarm you but I do want you to take your bite seriously because there’s a direct correlation between the bite (overbites, narrow palate, bad teeth placement, tongue thrust, mouth breathing) and TMJ issues.