Thanks for writing in.
Given your symptoms, you have a spasm in the muscle with or without a nerve injury
. The latter can be decided only after doing an examination. At this stage, I think you should rest the area, apply warm compresses and take Tablet Motrin
1 tablet 6 hourly with food to help with the pain.
Also, please see your physician and get the nerve injury ruled out. If there is no nerve injury or just neuropraxia, then no further treatment is needed.
Hope this helps