Thank you for your query.
Intermittent , recurrent discomfort like that you are suffering from is typically caused by either a nerve irritation
or a circulation problem. A doctor will have to examine you to differentiate between the two. This is important as the treatment for the two differs completely. It will be best to start by seeing a physician , he might then ask a neurologists opinion if necessary.
Please ask if there are any further questions. Kind regards.