Hello and welcome to HealingWell,
Your sx do fit with anxiety and your Drs. have all agreed that they do not find anything physically wrong with you. I would trust them and work on reducing your anxiety accepting that it is tough but you can do it with help.
First of all, anxiety will always be part of our lives and we need to develop a certain level of tolerance to feeling anxious. It is not possible to live life without anxiety. As self-aware beings, who can think about many possible futures and we can always make up scenarios about which we can worry. Also, we need to take appropriate risks in our lives. If we could keep ourselves as safe as possible we would never leave our houses nor live a fulfilling life.
Accepting a certain level of anxiety means we don't let it stop us living life. Also, accepting it means we don't make things worse by ruminating too much about why we are anxious, or criticizing ourselves for feeling that way.
Anxiety can greatly influence our thinking in a way that isn't rational. We may easily go into catastrophizing, i.e. imagining the worst possible nightmare to become true. However, this is your imagination going wild and often has no basis in real life.
I would strongly suggest you find a counselor that you can build a trusting relationship with and work together to help you learn ways to decrease your anxiety. I have had a therapist for 3 years now. It does help me.
I wish you peace,
Kitt