Help with health anxiety?

For the last almost 2 months I’ve been experiencing difficulty breathing with chest pain and feeling like part of my throat is closed off and not letting any air in, causing difficulty burping eating and breathing and clearing throat. I’ve had a cough and coughing up mucus but it hurts to do so now because it’s been going on for so long. This all started after I quit vaping. Ive tried nebulizer treatments, prednisone (which helped with throat tightness), and I’m taking prescription strength omeprazole for acid reflux. I’m supposed to be getting a colonoscopy and an endoscopy for suspected Crohn’s disease affecting upper and lower gi tract. However seen several drs who say my current chest pains and trouble breathing is anxiety related. I’ve started seeing a psychiatrist and started several different medications for anxiety depression and adhd. I feel even tho I’m going to counseling weekly and on medications by symptoms are still present every day but sometimes less severe. I’m having trouble coping with this and feel like I don’t believe that it’s just anxiety but that’s what the drs keep telling me. I feel there’s something bigger going on, but keep trying to remind myself they’ve ran tests and tried a few treatments. I’ve done breathing exercises, medication, and counseling but I feel like I’ve run out of options for help and don’t know what else to try to give myself some relief from these symptoms.