Hi!
What you have is probably a spinal headache. This happens when the CSF pressure in the brain falls. This usually happens after spinal anesthesia, spinal taps, or spinal injuries. However in some people this happens without a cause. This is known as spontaneous intracranial hypotension.
A procedure called an epidural blood patch, if is successful, even temporarily, it generally means the patient does indeed have a spinal headache. A small amount of the patient’s own blood is injected into the space between the dura and the bony spine known as the epidural space. If this causes temporary or permanent cure of headache, the diagnosis of spinal headache is confirmed. Please consult your neurologist regarding this. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.