One of the things I hate most about anxiety is that it causes such scary symptoms. My husband has Stage 4 Lung Cancer and I have many of the same symptoms he has. I told my doctor that the last time I saw him. He just looked at me sort of patronizingly and then gave me a hug on his way out of the exam room. (He's an awesome doctor. I just think sometimes he doesn't know what to do with me. I don't blame him. Sometimes I don't know what to do with me either.
)
Anyway, if you are trying to get away, my money is that these are anxiety symptoms. So many times I have thought that what I was feeling had nothing to do with anxiety. It couldn't. I wasn't feeling enough anxiety about what was happening for these symptoms to be appearing so dramatically. Then, voila, the event or whatever ends and my symptoms magically disappear.
I've felt all the feelings you are currently feeling with my anxiety. I've also had them with a virus. Worst case scenario is that you have a virus. It is highly unlikely you will die from a virus. Unfortunately, health anxiety is not usually rational.
So, this is what my therapist tells me to do in situations like this. I am supposed to acknowledge and thank my health anxiety for trying to protect me. Then, I am to at least try to make peace with my fear by saying something like, "It's true. I could die. We'll see." Then, I tell my anxiety I'm going on my vacation anyway.
I hate the trying to make peace part. I want so much to reassure myself my fear won't happen, but just like Daniel Nugraha said, we have to be brave and face our fears if we are ever going to get better.
You can do this!! Let us know how your get away was.