I’m so exhausted

I just need to vent for a min. So I’m July 2020 I experienced my 3rd miscarriage. Afterwards things started happening to my body. I went to the ER multiple times for my heart racing, palpitations and feeling short of breath. After a visit with a cardiologist where they did an echocardiogram and I wore a holter monitor for a week, they found everything was normal and I quote “a very healthy heart”. They said I have a panic disorder. Fast forward and now I’m having new symptoms but I’m scared my doctor will think I’m crazy. I feel dizzy all the time and my head/scalp will randomly feel tingly. I don’t know what to do anymore. It seems the more I push for answers the less I find. I know I have anxiety and I’ve been seeing a therapist since September but it’s so hard for me to believe this is all caused by anxiety. Does anyone else have a similar story because I feel like I’m going crazy.