I also sent you a PM, but I do not think you have long covid as long covid is not a formal diagnosis and is classified as being an extension of actually having covid. It's one thing for a Mayo doctor to say they have heard of other similar situations and for them to tell you you have long covid. If the latter was the case I would like to know the doctor's name as that is not consistent with what I've heard their stance to be. Of course that's not to say you do not suffer from similar symptoms after having a vaccine, as 3 weeks after being vaccinated I also suffered from symptoms similar to those of LC sufferers, but I do not have long covid. One big reason is that the vaccine can not give one covid and therefore one can not get long covid; but a vaccine can affect a reaction from the immune system. The other thing is that for clinical and scientific reasons LC clinics have required a positive test when admitting patients. The reason is that if there was something specific to those with "long covid" they needed to control the basis of what and who they were tracking. Some LC clinics have become more accommodating as some people had covid and been suffering from LC before they could have been approved for the test. The other thing is that clearly defining long covid is extremely difficult beyond it being a continuation of symptoms related to covid. All that puts the emphasis not on a diagnosis of LC but on dealing with symptoms and to do that seeking out doctors who are open-minded and persistent in treating them.