Bells palsy. Will there frequently?

Hi, My mom suddenly had clogged ear for past 2 months and tictac sound while swallowing so we checked with ent doctor and did all examination and told no problem in ear this s because of cold but she felt pain in backside of the ear and got bells palsy one day, went to neuro doc and he gave steriod and calmnerve for 15 days thn got improvement after 15 days doc asked to continue calmnerve tablet and Excerscise alone. Now everything is ok but often she experience sharp pain at backside of ear and head. But our neuro doc says it's because of bells palsy only it will get well on its own. Kindly suggest is this pain is due to bells palsy and ear blocking also not going . . Please suggest 🙏 Note: she is having ILD and CAD, taking tablets oxy level is good but cold and cough will there frequently