No you should not
As per protocol oral steroids are not a routinely recommended treatment for otitis media with effusion (if there is no other cause of your ear blockage)
You need to get an ear examination and audiometry to confirm the diagnosis
You can try steam inhalation twice a day and continue intranasal steroids till then
Next Steps
visit your otologist for diagnosis confirmation and treatment options
Health Tips
be cautious not to clean your ears and avoid valsalva till then