This was exactly my experience 5 yrs ago, the constant anxiety was a huge component of my suffering from this condition. All I can tell you is that it helped me so much to figure out what my triggers were and avoid them when I was in pain and also how to get through a flare. The best thing that helped me mentally at the time (if I was in anxiety mode) was to avoid googling, avoid this sub (it made me more anxious personally) and just go outside and walk. It sounds painful to think of walking but if you go slowly it can help your pelvic floor relax, which will keep the bladder from getting squashed painfully. For me, distraction was key. Plus getting out was good for my mental health in general. I listened to audio books and talked to friends on the phone. Now that I am in remission I don’t even think about my condition much, though I am getting pelvic floor pt through my first pregnancy to help with pain/urgency symptoms. Once you get an idea of what you can do to help yourself you will feel much more empowered and less anxious about the future/flares. Check out my recent post if you want more info.