@hopelessag, welcome to Connect. That is a gut punch to not being able to get an appointment at Mayo Clinic, especially when you emotionally invested your last hope in finding answers. Unfortunately, Mayo Clinic receives more requests for appointments than available openings.

There are a few things that you can consider, like getting your doctor to submit the referral for you. See more tips in this discussion:
- Can't get an appointment: Any tips on what to do? https://connect.mayoclinic.org/discussion/cant-get-an-appointment/

Did you see that there is a support group here on Mayo Clinic Connect specific to headache? I invite you to join the discussions here:
- Headache & Migraine group https://connect.mayoclinic.org/group/headache-migraine/