What’s causing the internal vibrations and anxiety?

In July I was playing w my son when out of nowhere tunnel vision hit and I started profusely sweating face hands everything went numb heart rate flew up to 178bpm. Husband called ambulance cause I swore I was having a heart attack. They came got me took me to the ER where I was basically told find a therapist it’s just anxiety and sent home. These symptoms continued for the next 3 days to where the high heart rate and dizziness and internal tremors ended up putting me back into an ambulance again. This time the Dr said the same thing and gave me an Ativan and sent me home. This continued every single day along with not being able to eat and I couldn’t get in touch see my primary until the beginning of august cause I was a new patient of hers. So I started taking Benadryl to calm me down for weeks u til I got to see her, which helped with the intensity of the anxiety attacks and the nausea from not being able to eat. I list 25lbs in less than 3 weeks. I ended up back in the ER a few days later because this time my heart rate would not go down and I swore I was going to die and the internal vibrations weren’t helping. Lab work came back “normal” and again was told seek therapy. Finally saw my Dr told her what was going on and she prescribed me Fluoxetine 10 mg. Once I started it I was feeling better no lie until I wasn’t. Not even 5 days in and my heart rate sky rocketed I was profusely sweating like I ran a marathon and I was having insane hot flashes and mood swings. Told my dr and she told me to immediately stop taking my t cause she didn’t like the side effects I was having from it so I did. At my next appointment with her she basically told me she didn’t know what else to do and recommended I find a psychiatrist and prescribed me a 20 mg of omeprazole for my stomach issues to take twice a day. I felt like she gave up on me and just didn’t wanna do the work. This anxiety came out of nowhere, I wasn’t stressed prior to this starting. So I refused and had her do a bunch of lab work and asked to be referred to a cardiologist. We did lab work everything came back fine and the heart monitor I wore came back good too, but my C reactive protein was high in my lab results. Everytime I tell her about what’s going on I feel dismissed because she keeps insisting I need to find a psychiatrist. I have been in therapy since July and even my therapist agrees that’s this anxiety I have is a symptom of something else. When all of this started happening in July I cut out caffeine and most sugar out of fear cold turkey. And also quit smoking cold turkey October 1st. I have an endoscopy/colonoscopy coming up in January to figure out what’s going on with this nausea that won’t go away and this sternum pain and discomfort I have. I’ve never been an anxious person but this has completely changed me as a person. It’s given me health anxiety now also. I’ve never done drugs or drank. I don’t know what else to do, this has become so exhausting mentally, physically and emotionally.