Oh yes been diagnosed with anxiety for 12 years or so. Have a great doctor. But wow I 110% agree with you about being hypersensitive and misinterpret. I do that all the time! I am much better compared to what I used to be. I like to shine in on here sometimes to help people when I can even if its not the best advice just letting them know they aren't alone!
In my experience with anxiety, you can have symptoms at any time, even when you believe you are not experiencing anxiety/panic. Obviously, we are already stressed and tense, so the anxiety is pretty much there in my opinion. I also believe that we can become hypersensitive to any symtpoms that we believe are a problem. For example, when I was worried about heart health, I felt every little twinge, palpatation, pain, etc...you name it, I felt it. I also believe that we tend to misinterpret our symptoms as well...for example, any pain I felt, I immdiatley thought there was something wrong with my heart. This combination of hyperawareness and misinterpretation can be confusing and scary in the beginning.
I assume you have been diagnosed with annxiety by your doc and that he/she says that you are okay physically. Are you getting help for the anxiety? Keep us posted!