Welcome dslymes but sorry you have lyme and had to find us. However you probably will be glad you found us, just like I did when I found this place.
We ask new members to read our first thread New To Lyme?... Start Here! It is full of information.
As for your symptoms - gosh we are all so different and we all get a variety of symptoms. And what is horrible is that a symptom will go away and another will come.
I got dizzy with every hot shower I took. I practically passed out in the shower so many times before I figured out that it was the hot water that was causing it. I soon became the fastest bather in the world because my showers were cold water. It was such a horrific experience that I now still take cold showers.
Racing heart beats and irregular heart beats can be symptoms, but because it is the heart, I always recommend a full work up by a cardiologist. Do not rely on a forum to diagnosis your heart. Too scary, even if someone says, "oh yeah, that happened to me." Be smart and have it checked out by a qualified person, please.
And the vision problems also can be a symptom.
Here is a questionnaire you can assess your symtoms -
lymeontario.com/wp-content/uploads/2015/03/Horowitz-Questionnaire.pdf Now for the questions that will give us more information. How much doxy are you taking and for how long? Are you taking anything else with it? And do you have a lyme literate medical doctor or naturopath?
Again, welcome and sorry you have this.