You may have suffered either transient or permanent nerve damage.

There are two types of Rf; high temperature thermal ablation (this damages the nerve) and low temperature pulsed Rf (this temporarily impairs the functioning of nerves but doesn't do any permanent/irreversible damage).

By your description it is not clear which technique was used or if you had the lesioning done peripherally on the occipital nerves (upper neck/skull base) or at the C2 ganglions and possibly C3 nerves (deep in the neck at the level of the spine). Each location has its own set of potential complications, some similar and some different.

One potential side effect of the high temperature thermal ablation Rf is that it can produce worse pain then the original complaint being treated in some people (anesthesia dolorosa which describes a terrible pain in an area that is numb because the nerve was damaged).

Unfortunately there are just too many "pain specialists" who end up doing high temperature thermal ablations. Some patients are lucky and may do OK but life can be torturous for the ones that have unwanted side effects from the procedure. Headaches are best treated by a headache specialist and not a typical pain management doctor.