Hi..
Thanks for the query..
Your symptoms of having pain under the ear to face and jaw that comes and goes seems to be most probably due to nerve related problem..
As the
salivary gland stone was removed, the pain occurring now is not due to another stone.
Yours symptoms are pointing towards "Trigeminal Neuralgia".
Trigeminal Nerve is the nerve of face, any disturbance in its function can cause firing of impulses leading to episodes of severe short-lasting pain..
The most common cause is a large
artery impinging over the nerve causing damage of the Myelin Sheath [ a protective cover over the nerve] leading to severe
electric shock like pain..
Other causes are disorders like Multiple
sclerosis, tumour compressing the nerve, physical trauma etc..
Consult an Emergency room and get evaluated so that they can do investigations like x ray , MRI SCAN etc to confirm the cause.
For nerve related pain , neurotic painkillers like Carbamazipine [Tegretol], Gabapantin [Neurontin] can be advised..
Hope this helps..
Regards.