To start this off, I want to say that I am a 20 year old female college student with no history of health issues and I've never had a reaction to a flu shot before (I've had about 6-7 in my lifetime). I work out regularly, my diet isn't terrible, and I've never had mental health issues or any reason to develop mental health issues.
A few weeks ago I got sick with a bug that my doctor said "wasn't the flu but had flu like symptoms" and told me to take it easy. By the end of that week I had all my symptoms cleared and went back to the doctor for a post-check up, and he told me that I wasn't sick anymore and, when I asked him if it would be alright to get a flu shot in a few days, he said that I shouldn't have any problems.
Fast forward to two weeks ago. I get my flu shot and about fourty minutes later start experiencing chest tightening symptoms. There was no pain, just a bit of light headedness and a slight foggyness. I went back to the hospital and they checked me into urgent care to see if it was an allergic reaction, but found nothing and told me to come back the next day if I was still having these reactions. I felt fine for the rest of that day up until later at night (about 7pm when I was in one of my night classes) that I started getting these chest reactions again, heart palipitations, shaky hands, and became flushed all over my face and my upper chest. These symptoms spiked once or twice but then dissapeared within fifteen minutes and for the rest of the evening I felt constantly dehydrated. When I drank water, I would have to go to the bathroom immediately. I went to bed and slept fine and when I went back into urgent care the doctor laughed at me and told me that its probably a temporary 48 hour symptom because my immune system had been primed to react and the introduction of a new antigen made it react to the flu shot.
The next week stayed essentially the same but I kind of felt like I was getting better. I would have these chest tightening reactions in varying intensities, typically with pressure in my lower legs or a hot feeling on my upper back and head if they were bad, but they decreased in intensity and typically only occured either in the mornings when I woke up or right after I had eaten. However, on Sunday of last week I had been at home working on some homework where I had a really bad attack - pressure in my legs, light headedness, chest tightness, and a shaky feeling in my body that wouldn't go away. I panicked and a friend took me to the ER, where I spent three hours in the waiting room and two hours checked in only to be told by the doctor that all my blood work/EKG/x-ray looked fine and that I should go talk to my primary care physician about it potentially being related to anxiety. I'm not an anxious person in the slightest ( I mean, I'm a college student but Ive had much worse semesters than this and I was completely fine up until that flu shot) and in my gut I felt that her diagnosis was wrong but she insisted I go talk to my doctor to verify. After I left the hospital and for several days afterwards, I began noticing that my body really did not want me to eat anything and that, even after eating a slight amount, I would start showing symptoms and feeling physically ill.
After about four days of barely being able to eat, I went to my regular doctor and told him my symptoms and he told me that he thinks that I have temporary anxiety that was created from this unknown reaction going on in my body. He gave me .5g doses of Lorazepam to stop my symptoms and told me to try and eat as much as I could and that after a few days this whole thing should go away.
It has now been a week since that point and I do not feel any better. While I am fine walking, the pills only take a small edge off the symptoms and I still almost always get them after eating. I can only eat really basic foods such as chicken noodle soup, oatmeal, or light grains and anything else triggers a really strong reaction and leaves me feeling fatigued and ill. I have no fever, but my chest constantly feels weak and frail and I'll spend one hour being completely fine and the next feeling light headed, pressure and numbness in my legs, and shaky. It feels like my body is attacking whatever I put into my body.
Can anyone give me an idea of what this could be? I really don't feel like its anxiety and its something related to this flu shot that I got. It doesn't seem to be getting better and I'm constantly afraid my body is going to give out. Please please help I will answer any extra questions if it means I can get a general idea of whats wrong with me.