Hi Had Radio Frequency Ablation At The V Pain Clinic

Hi had radio frequency ablation at the V Pain Clinic on my cervical spine 8 days ago. I’ve been in pain for days but today the pain is extreme. I have the worst headache of my life. I called my dr and left a message but they never got back to me. I called the on call nurse line and they informed me that they were unable to assist patients after hours. I just need to know if this massive headache is normal.