Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain pain near the ear that is specifically occurring on opening the mouth seems to be due to problems related to the left jaw joint also known as Temporomandibular joint and the condition is known as Temporomandibular joint disorder commonly referred as TMD or TMJ.. I would suggest you to consult an Oral Physician and get evaluated and a thorough clinical evaluation and full mouth x ray like Orthopantomogram or OPG can help in diagnosis and treatment can be planned accordingly.. As of now you can continue taking Chymoral forte that is a painkiller and Proxivon that is a muscle relaxant.. In order to avoid stomach discomfort caused by these medicines you can take proton pump inhibitor like Omeprazole empty stomach in the morning and take antacids before meals.. You should also take a soft diet and avoid excessive mouth opening.. You can massage the sides of the face in round motions with your finger tips.. Do warm compresses.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.