Two days ago, I heard two loud popping sounds in the lower back of my head, which were immediately followed by a horrible headache, a feeling of pressure in my head and dizziness. I still feel the incredible pressure in my head, dizziness, pain and slight numbness in my face. Please help. Coincidentally, I am due for a CT scan of the skull tomorrow morning to follow up on a lesion that was detected in a prior x-ray. If these symptoms continue tomorrow, I will stop at the ER of the same hospital where I am having the scan. Please advise. Thank you.