Were you checked for a bleeding ulcer? Sounds obvious so I guess you were, but all the symptoms sound like that. And no, GERD doesn't cause anxiety attacks, but anxiety can lead to digestive problems such as GERD. But having these symptoms and not knowing why can cause a lot of stress, and that can lead to anxiety attacks. Or it could have just been your time to get this -- it just comes on and then you have it. I only mention the bleeding ulcer because you have the blood count problem plus stomach pain, so that seems the first obvious place to look.
I'm afraid I can't offer much help, but it sounds like it's not your heart since you have had all those tests and they came back clear. I DO have a history of anxiety/panic and the Zoloft that I take causes heartburn for me. Every once in a while I forget to take my acid medicine and if the heartburn creeps up on me I end up very panicky and feel like I am going to die or something. Anxiety can do a number on us and most people I know personally that have had anxiety just had it appear out of the blue. Hope you are doing better.
On Tuesday is where all hell broke loose I was sitting watching TV when all of a sudden my chest just closed,bad chest pain couldn't breath at all and numbness in both arms.I drove myself to the ER doctors did ekg,chest X-ray and blood works and all came back normal. Ever since then I am constantly restless cant sit still ,hands are trembling, chest pains and headaches and my arms are always numb and I've had about 9 big panic attacks since, I have been seen by 10 doctors had 4 ekg's 2blood works and 2 chest X-rays and doctors assured me theres nothing wrong with my heart and that it is possibly gerd or gastritis and anemia.But theres always a thought that keeps telling me there is something terribly wrong with me no matter what I do it's always there. Now my question is has anybody experienced the same thing with Gerd or gastritis and when you got treated did it go away??? Om doing a G-scope done the 27th. Im a 24year old male with no anxiety or stress history im not depressed at all and I'm way to young to have all these symptoms my life feels over because I cant do the things I used to I just want to be normal again:(:(:(