I am 62 years old and have had severe headaches for years, had MRI done in July, I have 6 bad disk, herniated bulging, one with nerve protruding, and degeneration, my pain is very severe most days. Have appt. on the 18th for epidural injection........but late yesterday was laying on moist heating pad with usual pain, an all of a sudden it felt like I was having an explosion behind left ear in neck, it was so horrible, I screamed out. Afterwards very weak for about 2 hours......should I go to a hospital, or try to wait 6 more days?? Thank you, Rita B